Final Cut X glacial slowdown with large media library

Question

I am struggling with a vexing problem. I stupidly went to bed as I told Final Cut X to "import all" on a "prepared to leave my edit bay for the other coast" 4TB data drive containing just three duplicated Final Cut X timelines, but many, many other files. So, after about 12 hours of importing, NONE of my timelines had been recognized, but over 25,000 files were added to the media bin.
So, with this daunting number of files, Final Cut X (latest) on 10.9 (latest) on a Mac Mini with 8TB of RAM, becomes slower than molasses at absolute zero. Cleverly, I tried a "select all" and "DELETE" to rid myself of the mega media bin (more than 25,000 items) and, after attempting to delete for about 8 HOURS, Final Cut X crashed.
Now I am trying to delete a few at a time, a few thousand times, but this has proved a no-go. To select, say, three files seen on the screen in front of me takes about 30 minutes, as the daunting age old clean operating issue of MacOS seems to be at play: to select three files, each of the files must ask permission of all other files before allowing themselves to be selected.
Doing ANYTHING in Final Cut X with so many files at play takes eons of time in a 64 bit world.
Well, I will continue to post on this issue as I work it out. Fun trying to do this in the midst of moving a house (of stuff) to another house.
A note to Final Cut X programmers: I am the guy who forced the rewrite of the App Store (remember that?) having found its databasing flaws. Here is how it works, or should work: when a user mistakenly does an "import all," and the process sees the massive nature of the future - IMMEDIATELY a dialog should appear. It warns about the huge number of files which would result in 100+ of hours of content, and provides alternative choices, which are:
1) Only import located Final Cut X timelines and associated media. (most salient)
2) Only import Quicktime HD movie files.
3) Only import Quicktime SD movie files.
4) Only import bitmap images.
5) Cancel.
It would be cute to add a date function to each choice, like "Created After MM/YYYY" with editable date fields. Focusing an import is what a pro wants.
Import All is pointless in the extreme, and clogs Final Cut X beyond functionality.
About THAT: When a media library grows to massive proportion, when a user attempts ANYTHING in Final Cut X, instantly, there should be a Dialog Box explaining the situation, and a radio button to suspend Final Cut X and Enter a Media Management Mode of a TEXT LIST ONLY allowing simple, fast, mass deletion. In reality, with 25,000+ files in the media bin, simply shrinking from showing 30 seconds of media to Showing 1 second of media takes about 7-10 hours wherein the computer suffers.

Answer 1

Well, the fix:
First, sleep, which I haven't done in a while. Moving a house during Christmas is epic and restless.
Second, unhide the Library. Not seeing it gives old dogs a head scratch.
Third, delete Final Cut prefs
com.apple.FinalCut.LSSharedFileList.plist
com.apple.FinalCut.plist
Fourth: get and/or update Event Manage X and select the projects on your connected drives. You DID save everything nowhere near your boot drive, didn't you?
Then, even on a baby Mac Mini, at least 1080 editing  to feature length, works fine. I have a 1:58:00 and a 59:00 edit in HD working nicely. I do not travel with my Mac Pro Towers, but I must travel with Final Cut.