Dtm primer question.

My original plan was to just do a cheap lacquer and single stage enamel job the whole thing was gonna cost 160 bucks. My car is just a backyard project I dont have a booth or even a good compressor I have a couple hf hvlp guns so I was thinking why spend a crap ton of money on a paint job that's more than likely gonna have bugs and dirt in it anyways. But I changed my mind and decided since I'm putting in the time to at least spend the money and do a decent bc/cc urathane paint job. The price keeps tallying up lol I think I'm gonna try that 5 star primer I have read positive reviews it says dtm so even if it requires sanding sand paper is cheaper than buying 2 gallons of epoxy and a 2k on top. Thank you all for your help I have learned alot