I'd say charge for your time in such a way that you feel good about it. In this business especially we all know about being too generous and working for too little money because we like a project or a person and then end up feeling resentful as the project drags on. When you say its 17 pcbs is that for 8 channel? Are the midi box pcbs in addition to that? If so that would be a ton! In general pcb's both in gdiy and in synth land cost $20 or more (example of different makers of synth module pcbs all at one hub: http://synthcube.com/cart/index.php?route=product/category&path=74_77).
Little risk in an 1176 though. I too have been watching this thread in anticipation.Maybe try the alps. You spend less that way and it will get you further along until you can get as far as you can. Than when its time you know what you have will probably work.