I freelance on .net projects for 70€ per hour, now I also doing e-commerce for myself which gets me excited now. Also busy with GPS webapplications on asp.Net mvc (embedded device who track trucks and the refrigerator °), WordPress sites, NodeJS ( MVP's),,.. I have a Cordova app before I go to clients, currently landing on too much work because of it ( it's a great conversation starter and builds trust). Will up hour…
You'll kill/burnout yourself with 16 hours/day.
I had a month delay on my projects because of it. The situation will improve soon in a month or 2. I also have a stressfull job fulltime ( team leader + .Net architect), but i can handle it. My dad had a more stressfull job then what i have, so i don't mind this. At least i'm able to take a break when i can. I just want it all finished on time.
Fyi, he was a veterinarian and sometimes worked 32 hours on a row. He's on his pension now ( works a lot less). I'm happier that i can choose my own hours and spend time with friends when i want.