Re: Ideal Settings for my purpose?

I'd use DVCProHD 1080p. or 720p. 720p should look just fine. But true it's horizontal rez is pretty limited. Kind of like an extreme anamorphic. It's squeezing 16:9 into a TRUE 4:3 sq pixels image. Even SD anamorphic doesn't go that far. But, it still looks great. And the overhead is pretty low on the processor and can even play back over firewire 400.

Motion - just render out 1080p DVCProHD (or 720p) files and drop them in FCP. Forget about the roundtrip crap. It will take you 10x as long to render motion projects within FCP. Render in Motion. If you want to make a change, render over the same file.

LiveType - I think only renders as animation codec. So that's going to play back choppy til you drop it in FCP and render. Don't bother roundtripping if that's even an option.

Create your masterpied in FCP and save as a quicktime movie (self contained). Open in QTPro and use present movie or fullscreen play back out to your monitor via DVI if that's working for you. Otherwise a looping DVD or Blue-Ray would be another option.