How much Paint

Yes, seemed good to me but having only painted on car I really don't have a clue on paint quality. I know you will get a lot if people saying you get what you pay for or only use such and such brand. Have heard that UreKem are guys from House of Kolor but don't know that to be true either. I can say, not to brag, the car looks amazing, people rave color and how great it looks. My buddy is a Meguiars trained tech and cant get over how good it looks. Entered two car shows and won two judges choice awards, so others seem to like it too.
You might have to call on the gallon only option, I paid about $100.00 a gallon. I also used there matte black it on the hood and it came out great also.

Much appreciated! I will give them a call on the per gallon price. I think what @DesertRat said is a good idea, buy what the whole car will take now. From what I have been told unmixed (no reducers) paint will last at room temperature for quite some time (years, I think) I'll be sure to ask when I call.

I called TCP Global to get some info and the guy that answered seemed less than sure about his product or the answers to my questions. SPI one the other hand was very knowledgeable.