I am happy that you were so inspired by the bitaxe project!! I really hope that by keeping this Bitcoin mining hardware (and firmware) open source we can start a chain reaction of development (again) in this space!
Im also pretty jealous that you are going to be working on this full time. Thats going to be awesome! If I could find a way to make that work, Id do it in a heartbeat.
As for PCB printers, what models are you looking at? I used the Voltera several years ago and decided it wasnt quite there for prototyping with fine pitch SMD parts (everything these days).
LFG!!