I need help from you guys. I can get a GT ZR frame in my size, but it doesn't come with the fork. I would normally stay far away from this scenario out of ignorance and paint matching. However this would be a keeper bike as I've always lusted over the GT road frames, and a powder coat would need to happen regardless as it needs a repair / modification. Carbon might be the best way to go but I really don't want to pigeon hole myself into black and I want to keep the cost down.
So the main question is - how hard is it gonna be to find an appropriate fork for this bike ? A used fork is preferable - 1 1/8". I'm guessing I could go threaded or threadless. Rake, length, etc are all things that boggle my mind. Obviously I want it to look right aesthetically as well

This is a pic of the same bike - only one year newer