It sounds like you are putting well more than the 150K in with your year worth of effort on the prototype. In my experience, bringing someone on who does not cu

It sounds like you are putting well more than the 150K in with your year worth of effort on the prototype. In my experience, bringing someone on who does not currently have skills that are immediately useful (besides "enthusiasm") will end with you doing all the work. You're basically giving away half of what you have spent so much time on as well as half your money, and will likely continue doing the bulk of the work moving forward. Unless this person is VERY charming and connected with maybe some business skills, I would recommend finding someone who is equally as capable as you and has produced something of similar complexity in the past. Ideally with a very complementary skill set. I'd maybe give them 10-20%, but vested somehow and tied to deliverables.