It's a bit of a tight squeeze but from tip to tip the robot is 46cm wide and 40cm long so it's already on the larger side.
The Honey Badger is 56cm long x 37cm wide so I wouldn't worry too much about the size.

I'd probably stick with the actuator for moving the flipper as that means two points to distribute the weight of the opponent, though at this weight class it probably doesn't matter too much.