Unless you have the facilities, oven etc... you'll struggle with water based paints so I've heard.
2 pack is way to dangerous without an air fed mask, and even if you did have one your neighbours could be affected. When I was spraying mine with celly, the fumes were really strong outside the garage, but cellulose doesn't have the same health risks as 2 pack - but it's still bad stuff to breath in
Cellulose isn't the most hard wearing of paints or the shiniest, but nothing that a buff couldn't cure. I figured I'd rather have a un shiny car until I buffed it, than breathing apparatus when I'm older.
The biggest problem that I found with painting in a garage is the temperature. I needed a minimum of 15 degrees to get a good coat without it running. I tried it at 10 once and it just ran off the car.
The mask that I am using is a 3M mask with charcoal filters that knock out the most of the nasties.
Hope this helps:
http://www.theminifo...81-2k-or-celly/