*Update*
So I decided to try my old boss out again, and working there is a DREAM. There is a constant parade of women in their summer best passing by the entirely glass north wall of the store, and the pace is perfect. I get to focus on doing my work 100%, and making sure I am putting out a consistently top notch product, which suits my personality better than speed, speed, speed based jobs.
BUT, my old boss can only offer me Sundays for now, and he thinks he can get me another day or two going forward. So now the trick becomes how to convince my NEW boss, in the same industry, to give me XY and Z day off each week, so I can (hopefully) slowly work my way towards working full time with the old boss.
Additionally, I think I might be able to get the old boss to let me work open-close all day Sat and Sun, which would be 23 hours.