I really think you need a business/office manager dude. Someone who takes all the client-side and bs leaving you to simply craft.
Also be useful to have someone with their nose in a calender who can help keep you on track.
Second and third the t-shirt idea, a lot of people would do anything to have even one BRP item (they aren't lucky like me).
Just started a new job so money will be spoken for in the first couple of months. If I can donate I will.
Happy to help out with shirts or anything else too.