I have an older TiPb, G4, 800Mhz, 512, 15 inch with an old version of FCP 3.0 on it and running OSX 10.3.9. I'll have about 10 hours of 24p footage from my HVX on hds and want to edit to a 20 minute piece using simple cuts, nothing fancy. What is the earliest version of FCP to edit HD with P2 input? 5.1.3? Will it work on my old Pb, even if slow? If so, where do I go to buy such an old upgrade?