I personally wouldn't do it. what happens if one of you can't work or loose a job? I know stable jobs right. What about getting sick and being off work for an extended period of time? Are you planning on paying cash if so it might not be that bad. If you are mortaging house can you afford the mortgage if the others are out of work? If so for how long? How will they repay you? what happens if one guy lands in jail for a couple years? I know you say that there won't be quibles over design ideas, but there will be. So which fridge do you get if one guy wants a bottom fridge, another a sideXside, and another wants a top fridge? Too many things can go wrong in my opinion. If it works it could be great, but if it goes south it can get ugly.