look for a paint store that sells good paint. i.e. ppg or shop line or somthing like that.
ask them, as far as your mixing they will help you and you can get a ratio cup, it has prints on it for you different ratios i.e. 4:1 2:1 and so on. i just bought a colmet spray booth and we are putting it up today, bad thing is i am about 45 min west of gainesville on u.s. 19 about 2 hours from you, if you ever want to make the trip let me know and you are more then welcome to come see how it is done.
hope this helps
good luck...............


john