I’m slowly grinding the US line for the AV8B+ (still three planes away, using F14B and F16C in turn to grind, but both being kinda out of meta is a bit of a pain), but I’m having decent success with the FA2.
It’s a fun plane to use IMO. I bring no gun at all however. Three Aim120 + 2 9M loadout and I rely on TWS to spot for me. If I’m unsure of where the target is, I just launch a 120 and follow the trail to launch a 9M lol.