1974 Plymouth Scamp

Finally got back to working on it and got the trans off of the engine.
This weekend I want to start getting the engine situated in the garage.

So for paint a decided that I want it as cheap as possible without looking awful. I want a kind of primer grey with a wide black racing strip.

Would I be able to get it smooth enough with primer with a clear coat? And how does that car spray paint look. (If it is applied very very patiently and correctly.)