I got a PSP 1001 for my boy. It has firmware3.50 on it. I;ve been reading on the Pandora battery and the Magic Pro Duo memory stick. I know how that all works. My questions are:

1. Do i need to update the firmware(via Sony) before i do anything else?
2. Which software do i run on Pandora (is it the CFW 5.50 GEN)?
3. Does this pandora software stuff need to be on its own memory stick or can i stick it on one that already has games/movies?
4. Will it still sync up with the ps3 after modding with the CFW?
5. Do you use several magic pro duo memory sticks for games cause what i seen is that most games are around 800mb so that will fill up a memory stick fast.

thanks for your help.