I allready found an interesting walkthrough to find the pairs (http://reprap.org/wiki/Stepper_wiring#.22pair.22_wires_on_4_wire_motors)
with all the time, effort and work you put in this thing you deserve it that it becomes your full time job!
I would like to start printing but for the moment I am waiting for my 3D printer to be delivered (printing at university or a private shop is much more expensive 😉 )
I also discussed this with some of my friends and we had a really nice idea for a simple adjustable vacuum table. I hope to upload some information about that as soon as possible.