A couple of thoughts short of getting into the spray gun & compressor:

1) Look into a do-it-yourself stand for painting the bike, have seen some clever approaches posted here.
2) Rust-Oleum makes some rattle can "Professional" paints that are alleged to be a bit tougher, you might consider a first try with them, though color choices are limited.
3) Reportedly a "2K" clear-coat adds toughness to a finish, and you can get that on eBay or I suppose other places in a single-use can.
4) Get a RESPIRATOR if you are going to use 2K paint.
5) Look into hand-pin striping, with "One shot" paint and a pin-stripe brushes, and there are a number of Youtube videos on how to do hand pin-striping. Even if you have someone else do the painting, you might enjoy doing the pin-striping yourself (I keep telling myself I am going to learn how to do this.....)