I know it is too soon to be digging into, but you can't help but get drawn into the great primer debate. I've sprayed plenty of epoxy paints for my RC models, and yes I would like to avoid that. It really will slow me down, not just physically but mentally. The mixing, the waiting, the spraying, the curing, the clean-up - all of these steps weight on my mind and tend to prevent me from moving forward with my projects. Plus the health issues. But I do feel like I want to prime at least the contact surfaces. If nothing else from a re-sale value. I'll admit, I'm also a sucker for zinc-chromate green finish on interior parts.
I think I'll fall somewhere between using rattle cans or one of the 1-part water-based primers.