I’d archive (to whatever medium you choose – tape, LTO tape, hard drive, DVD or Blu-ray) all the original/native files you used in your edit. H.264 is not an FCP-supported edit codec. So if you recompressed your files to H.264 for archive, you’d have to recompress them again to edit, with a resultant large loss of quality.
John
MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.8 QT7.6.4 Kona 3 Dual Cinema 23 ATI Radeon HD 3870, 24″ TV-Logic Monitor, ATTO ExpressSAS R380 RAID Adapter, PDE enclosure with 8-drive 6TB RAID 5
FCS 3 (FCP 7.0.2, Motion 4.0.2, Comp 3.5.2, DVDSP 4.2.2, Color 1.5.2)
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