If I were doing this, I would change my codec choice for the sequence to Animation, Best (Right click the sequence then go to sequence settings) Animation is lossless and is much smaller than 8 or 10 bit. Everything you render then will be animation instead of DV (which is horrible for graphics/images).
Now, depending on your computer, you may not be able to play back full screen animation from your timeline (even though you’ve rendered it). If that’s the case, you may want to WORK in DV resolution, and then once you have your sequence exactly how you want it, you;ll want to switch to Animation BEFORE YOU EXPORT to Compressor. You’ll have to rerender everything, but you’ll have all the benefits of animation codec on your DVD.
As far as everyday editing, you could use the same workflow as the above paragraph for working with video. Remember though: DV in DV out. Rendering to another codec won;t make your DV VIDEO any better, it just won’t recompress it and make it worse. Your graphics will look much sharper though if you don’t render them to the dv codec.