Quick tips on stopping the rust on the cheap

Well I tried my best guys some picture of the process below. I’ll wait and see how it drys and looks before moving on to the rest of the engine bay.

I used an angle grinder t get down to the metal. Then used vinegar water with scotch brite pads in order to dissolve the remaining rust. Then I sanded down the metal with 120 grit for paint adhearance. Then I degreaser with purple power using multiple clean rags.l. Then I sprayed with rustoleum light coats I think 5 coats so far. Let me know your thoughts. Did I miss something in the process ?