Didn't have any time to check the thread this weekend... thanks for all the responses.
I've got some ideas modeled, and hopefully I can show everyone what I've been thinking.
So far, I have a saucer section, some engine nacelles, and an engineering hull. The engineering hull won't be inhabited... it's basically fuel storage tanks and the M/AM reactors.
The saucer is going to made up of several modules, linked together. I'm going to have a radiation shield on the bottom of that, shielding the saucer modules from the reactor.
It'll make sense I hope, when you guys see it.