Love the concept. I'm fresh out of college, so I'm more than happy with full time work at the moment, but I'm definitely hoping to FIRE (or more like FIPT) within 10 or so years if things go well. Working 20 hours a week sounds fantastic. Enough to give me something to do on a regular basis, but also enough to let me do whatever I want to do, whether that be freelance development, or a new hobby.