+1 go with a HF sprayer. There’s lots of things to be careful about.
Use an in-line filter on the air to remove water and oil from the air.
HF sells cone filters to filter the paint thru when pouring into gun.
Start with the the amount of thinner that the paint can recommends, then practice a bit so you can see the affect of different amount of thinners. Adjust thinner quantity based on your experiment.
Practice some more to figure out how to put down just enough paint to get gloss, but no so much to get sags. That’s the part I really suck at.
Be advised that flaws that seemed barely apparent before painting will look huge after painting. That’s another part I suck at.