Ihave lots of hands on experience with the EDGE you mention and the 33% H9 Extra.
First - the small models you mentioned are all woefully overweight and simply --as Paul noted , stall out easily.
The 33% EXTRA -done correctly is darn good at not stalling out or dipping a tip.
size and wing loading REQUIREMENT are far different.
The 33% H9 models all can easily weigh about 22-24 lbs -no reason to be heavier than this .
This sticks wing loading about 30 0z ft -+ a bit.
The wing loading per se -is not much different than the smaller models -BUT the smaller models need to have a much lower loading to be anywhere near as well loaded for aerobatics .
more like 25 ozs ft.
Always kicking to the right , suggests an unbalance in weight and or trim (including rudder and elevator ).