tominator........
imo.......it's all a personal choice and what works best for you.......trial, error and practice is gonna be the best teacher........
i fell for acrylics a while ago over enamals and all good LHS's will have both or at least a respectable choice of either.........
personally, i prime (AB) all large assemblies, a medium primer grey, tthat have a mating surface......fuselage halves, wings......etc....just so i can better detect all the flaws during assy.
someone jusr recently posted the 3 P's.......patience, practice & perseverence.....