Ha I hadn't thought of that! Are they double doors??
This depends on the arena Robots Live is definitely double doors, Extreme Robots is a sliding single however Gabriel and the like will go through those so you are probably OK with your proposed dimensions.

Yeah, the double weight limit was epic, but that would make this a heavy in a middleweight group
Heh, I've fought HWs with MWs before :P It is a victory just getting a fighting machine to survive 3 minutes in the arena in the first place.