Whoops, could have been clearer... I've got access to compressors and a pressurised spray mask with air line, so I'm not going to poison myself

I'll be using my grandad's ridiculously massive garage too, which is probabl about as good as you get without a pro spray booth. I've done my reading and spoken to a few pros already, so I've a fair idea of what's in store, but this is a new option that I'd not considered before.
I'm not talking about using rattle cans, like I said they now do a full mixing service for spray gun use. I don't know what sort of paint it actually is, though it's definately not 2-pack... I'm told that the actual contents of the rattle cans are pretty good quality paint, just limited by the delivery method (someone in a previous thread mentioned buying the cans, draining them then using the results in a gun)