I'd skip the fancy paint and chrome until you get the thing together and put some miles on it. You never know if you're going to like a bike until you ride it for awhile. Also keep in mind that building on a used and untested (by you) frame can be risky.

Yes, you'll need to disassemble the bike in order to paint it, but this is better than putting a bunch of paint time and money into a old/used frame that ends up being unsuitable for some reason or another.