My brother has the .46 AX in his. I think it has plenty of power for scale/aerobatic flying. Of course the verticals are not unlimited, but there's plenty of power to get you out of trouble if you need it (don't ask me how I know!!). I think we have a 12x6 prop on it now.

So just one more suggestion...be ready on the rudder on takeoff. I remember his first takeoff being a little "interesting". Maybe a few high speed runs would be a good idea.