1. Yes that should be plenty of power
2. Not totaly sure on this, I will check it out and post later
3.Yes, set the front 2 for sucking air in and the back 3 for blowing air out
4.Yes the memory will work correctly
5. Yes no matter what it should work. Because of the fact that agp speeds will downgrade if necessary. However if it is a pro slot and you don't have one, it will not work.
6. As long as it says Socket A it should
7. Yes as long as the heatsink says 80 mm fan
8. i have 4 fans and it is mildly loud. Not anoying loud
9. Nope not that I can see
----
Notes:
Great setup! The Li Lian should help with heat disipation along with the fans. It should also be fairly light. Hope this helps.