help and options highly needed on single stage

before i get too ahead of myself napa has a epoxy primer that they said there paint expert said is 1cup to a gallon of paint???????does that seem right 16-1 per quart?

its 55bucks and i called a DuPont store to ask them and they said it may be industrial think and i would need to bet a primer nozzle 1.7 or have them check the thickness and they could tell me a better ratio to mix at for my Bink's only has he said prolly a bc/cc single stage nozzle. any answers here please would help 530 is latest i can tell them to have it by tomorrow.