Mike,
Absolutely interested! Sounds like you have the hardware up and it's "only software". If you want a second opinion, email me a copy of the schematic of what you have so far ( ORCAD, dxf, pdf, etc. ). If you want, I can start a layout for a pcb board and work out some quick cost numbers. This may somewhat be putting the cart before the horse, but it sounds like the basic interface is operational.