Dropped My Laptop - Which Tests Should I Run To Assure It's Fine?

Question

Unfortunately I placed my one + a half year old 15" MacBook Pro laptop  on a new tilted notebook cooler (that has no grip), & sat them both  on my computer chair while in use. To my recollection I only had the  YouTube homepage open without any video playing, and Dropbox was  downloading some small photo files to my laptop intermittently (that I  was uploading from my iPhone at the time). I walked away and it suddenly  all fell from a height of 2 feet. When I looked they were both sitting  on the floor. The screen was in the same position I had it in (so it  likely didn't land display first), & the notebook cooler was sitting  to the left of it still connected via USB. I'm not sure that the soft  notebook cooler broke it's fall (see attached photo), but it's crazy how  it all landed flat as of it were being placed side by side on a table.  The usb cord from the cooler didn't even yank itself out at all. My room  is carpeted, but nonetheless I freaked out because it's a fairly new  MacBook Pro, with a brand new 750GB Western Digital Black series 7200rpm  sata hard drive (that I had just installed a couple months ago). The  hard drive is obviously of importance to me since it carries a lot of my  recent project/work files.
Luckily I have the original internal hard drive that initially came with  my system. It contains all of the files I would have had a couple  months back in working order. It's now in an external USB enclosure,  because I had used Carbon Copy Cloner to migrate/backup an exact image  of everything (data & OS) from my original drive, to my newer  Western Digital hard drive - prior to installing it 2 months ago.
The first thing I did was inspect my laptop on the outside. I can tell  you that surprising as it is there is absolutely no damage clear to the  human eye that I can see on the exterior body. From what I've heard the  MacBook Pro shell is actually made out of a solid piece of aluminum. The  hinge when you move the screen still feels the same as it did before  too. I have quite the computer skills background, so I opened the case  up just to give it a glace over with my magnifying glasses headset and a  flashlight. I looked at the motherboard over and over for about an hour  to double, and triple check that there was no damage to the motherboard  (ie: cracks, broken solder, bent usb port that was in use during the  fall, etc). From what I saw there was absolutely no damage to the  important parts of the laptop. I had opened up the case before, and it  looked pretty much the same... The only thing I noticed damaged, were  the 3 screw holes that hold the laptop battery in place (one is under a  black leftside sticker). Such a minor crack on each of the plastic screw  holes (on the plastic battery body, not the aluminum laptop case). They  were very minor cracks yet still in place, you'd have to look closely  to see them. Now I can't remember well, but I think the last time I  opened the case months ago they may have already been like that. & I  may have just left it as they were. If so the damage could have been  caused by over screwing at the factory. I'm not sure, but if not the  fall may have caused it. So I took the battery out and super glued the  screw holes back to the battery body properly (see attached photo). I  could not, and would not disassemble the MacBook Pro motherboard, &  other device pieces for a more thorough check over a 2 foot fall. I just  don't think it's warranted to do so, being that everything else on the  underside seems to be fine to the naked eye. I guess it would be going  overboard...
A quick factoid:
Apparently my MacBook Pro has a feature called SMS (Sudden Motion  Sensor). The Sudden Motion Sensor is designed to detect unusually strong  vibrations, sudden changes in position, and accelerated movement. If  the sensor detects any of these, it instantly parks the hard drive heads  to help reduce the risk of damage to the hard drive in case of impact.  When the SMS senses that the computer's position is once again stable,  it unlocks the hard drive heads and returns to normal operation. In  general, SMS protection does not change hard disk performance with  regular operation.
Also my new internal Western Digital Black series hard drive  specifically states on their website to having "Rock-solid Mechanical  Architecture." With enhanced reliability features help protect the drive  and the data stored on it. As well as "NoTouch Ramp Load technology" -  The recording head never touches the disk media ensuring significantly  less wear to the recording head and media as well as better drive  protection in transit. Although I don't know if these Western Digital  features apply to normal operating hdd use while powered on, or just  when you have your laptop powered off (eg: parked head position when  shutdown).
I called Western Digital since the hard drive has a 5 year warranty  (unheard of). & I asked them if they had any software to diagnose  the drive beyond Disk Utility's simple "SMART" status info in Mountain  Lion's Mac OS X 10 (which showed up okay by the way). Anyways Western  Digital does have software to do a thorough SMART test, and surface scan  checking for Windows (which I have used before on my other pcs in the  past). But they don't have one for Mac, and he suggested I take the hard  drive out, then pop it in a pc to scan it. But I'm not even sure a pc  would recognize the disk being that it's formatted differently in  comparison to the pc standard of NTFS. I believe he said to reformat it  as NTFS, but that would defeat the purpose of a faster scanning method,  and leaving it as is.
So now what I'd like to do is use a program I found called "TechTool Pro  7." I'll install it to the original hard drive that came with my  MacBook Pro (that's now in my external usb enclosure), and use it to run  every possible scan on my MackBook Pro to make sure everything that  appears to be okay - actually is. But most importantly to run a thorough  SMART test, and surface scan on the newer internal hard drive that  experienced the fall. Since TechTook Pro 7 does have the ability to do  so on any drive. Ya, believe it or not newer Mac's don't have a surface  scan feature in the OS. Remember the external usb hard drive is an exact  1:1 image of my working MacBook Pro a couple months back. So I should  be able to boot off it, and install the program onto it. Of course I'd  be turning off my Wi-Fi during TechTool Pro 7 use, to avoid any  unrelated software updates from other programs while scanning.
I need to run a surface scan on this drive asap, and I will. I'd  appreciate it if you guys would give me general things I should do to  test all of my laptops hardware to determine if everything is alright or  not. Let me know what type of things I should use to test all of the  internal laptops hardware. Let me know what to look for... & how I  should go about using my laptop for the next month or so. I will  probably be doing tests on it every two weeks just to make sure it's  okay until Spring hits. If everything is fine then, well it should be  good for the long term - and have survived the impact well enough.
Thank You Apple Forum Users & Happy New Year
P.s.
If anybody knows what type of drop tolerance a hard drive can take (and  survive) while in use let me know. Also I did come up with a couple of  things on Google that supposedly can help. One is Apple Diagnostics, and  the second is called Apple Hardware Test. If you Google them they'll  come up, but I have no idea if these are for desktop style Mac's only or  laptops too since they don't mention the word laptop. See here for a  quicker view:
http://support.apple.com/kb/PH11342

Answer 1

in the future, buy this, this is what the Pros use:
for drops, accidents, spills, loss, or theft, purchase a TYPE of insurance called "inland marine insurance"
roughly $30 per year for a device(s) with 0 deductible, used same for over 20 years, same insurance the pros use on their portable devices.
very cheap, very useful insurance, most people dont know about same.
http://en.wikipedia.org/wiki/Inland_marine_insurance