I use the same battery in all my beetles, they've been absolutely fine in my experience. The motor you've got might struggle a bit though depending on how heavy your weapon is, I ran 28-26's for a while and they struggle initially to move anything more than 250g. I swapped to the 28-36 1400kv on all my machines and haven't had issues with them yet.

In terms of drive controller I run brushless drive on my beetles so use 2 reflashed Afro 12a on brushless converted 1000rpm gearboxes, they're a bit finicky to get working initially but they were great in Tempus and Phobos throughout the Burgess Hill event.