Mark,
As Jeremy mentioned above, how are you finishing? It sounds like you are shooting and editing for broadcast and not a theatrical 24fps ‘film-out’. Correct?
If you’re just finishing for TV, then I would edit on a DVCProHD 720/60 preset (actually 59.94) and let the camera do the 24 frame 3:2 conversion. That’s all I do, I just edit for broadcast and DVD. It’s simple. The HDX900 does all the work for you as it records. You just shoot 24fps with Half shutter and the camera adds the 3:2 pulldown as it records. Then, digitize into FCP using the DVCProHD 720/60 preset and you’re all set.