I always just do the free fly, I don't really do the tracks much at all. I like the flips and tricks and such, lol.
The RM Boxer is a great choice! Actually have been trying to decide if i want one or not, because I had a racer that was ELRS, but I just switched the receiver to crossfire which is what I run on everything else.
I have a 'hand-me-down' Taranis X9D with a TBS Crossfire module on the back. I actually just started flying live back in September at a drone festival my buddy puts on every year called Castle Crash. I was just lucky to fall into a group of hard core FPV dudes. My best friend runs a drone parts store, flyhighfpv.com, and is pretty well known in that world.