Family Migration Strategy needed (from mobileme)

Question

My brain is about to explode. I have read countless articles about mobileme to iCloud migration, and I am NOT clear as to how to accomplish this...
- I have an "AppleID" ([email protected]) that I have used for my family for countless years to purchase iTunes content.
  - I have a mobileme account ([email protected]) that I have been using for a few years for iCal and Address book sync between 3 family iPhones and 3 family macs. Yes, we all share calendars and contacts.
It is my understanding that iCloud does not want us to share contacts and calendars. But as a family we want a single address book -- at least a subset of our addresses should be "shared".
I know that we can use the old AppleID for the store -- [email protected] -- ok, fine.
BUT - what is the best solution for:
- iCal calendars. We want to share our calendars between all macs and all IOS devices;
  - Address Book. We have a family shared database -- and we want this shared. In our perfect world, we would have a group shared address book, and then local, non-shared part  (didn't Now Contact handle this just perfectly 12+ years ago?)
Am I reading this corectly that we can have a 3rd AppleID for certain iCloud services? Is this true? But the "migration" is going to be a mess since we already are using, "[email protected]" for mobileme -- yes?
CAN I DO THIS:
1. use my existing [email protected] AppleID for iTunes (purchased content) for ALL devices;
2. use my existing [email protected] AppleID as MY iCloud address - for all iCloud services EXCEPT calendar, address book and photo stream;
3. create a new [email protected] AppleID for wife's iCloud services, EXCEPT calendar, address book and photo stream;
4. create a new [email protected] for daughter's iCloud services, EXCEPT calendar, address book and photo stream;
5. create a new [email protected] for FAMILY SHARED iCloud services: calendar, address book and photo stream;
Will this work for us?
Yes, WE WANT to share our calendars, our contacts and our photos.
Will the fact that I already have 2 Apple IDs (and one is mobileme) get in the way?
Is this strategy of a "3rd/SHARED" AppleID for contacts and calendars the correct approach?
Is there a best-way to do the migration?
Is there a worst-way/guaranteed to fail/avoid-or-else method?
WE DO NOT use mobileme or appleID for email.
WE HAVE gmail accounts in addition to our [email protected] addresses.
My macs are still on Snow and my iphones are still iOS 4.x (all iPhone 4), so I can't really try it and revert. I really want to take advantage of Lion and iOS5 features -- but if I can't do the shared calendars AND contacts, I need to find the solution before I do this.
Thanks in advance for your assistance here.
J

Answer 1

CAN I DO THIS:
1. use my existing [email protected] AppleID for iTunes (purchased content) for ALL devices;
2. use my existing [email protected] AppleID as MY iCloud address - for all iCloud services EXCEPT calendar, address book and photo stream;
3. create a new [email protected] AppleID for wife's iCloud services, EXCEPT calendar, address book and photo stream;
4. create a new [email protected] for daughter's iCloud services, EXCEPT calendar, address book and photo stream;
5. create a new [email protected] for FAMILY SHARED iCloud services: calendar, address book and photo stream;
You should continue to your iTunes Store ID as you have done before, logging into iCloud sync services won't change this.
You can do all that you suggest however you can only log into one iCloud account at a time and your suggestion would require you to keep logging in and out of accounts which would all be rather clumsy.