I have considered it, but I'm very impatient and also am not fond of the idea of fronting money for something that I may not be overly fond of upon completion
A very good point. I’m going to be the contrarian here and say don’t go the commission route. I’ve commissioned many pipes and while I was generally happy occasionally I was not. Since this is a unique spend for you I think you should buy a pipe that already exists so you can be surer of getting exactly what you want.