Thank you for the options. I'll try some or all of those.

In regards to selecting multiple objects in order to do batch exports. Being that this is a complex piece, with hundreds of layers, is there an easy way to select a group of objects, export, then turn them all off with one click, so I can proceed to grab a new set of pieces?
I can't seem to do that in the object browser. It seems that I have to turn the visible eyeball icon off for one layer at a time.

Finally, are there plans to release a 64bit version for Mac in the near future?