Are you sure your loading calculations are correct?

I find that most RC models will sustain a 33% weight increase or more without doing too much damage to the flight charactersitics.

As a result I often load down my planes with large 3800mAh NiCD or NiMH batteries to give me long flight times and better wind penetration.

46oz/in is analogous to a loaded warbird.

The Tucano's straight wings will help prevent uncommanded snaps, so from your perspective all you may see is a need to maintain some throttle on landing and faster speeds than what you are used to.

I hope you have at the very least a 500' runway available.... I have a few planes that take the full 500' to come to a stop, and even then need a bit of left and right goosing of the rudder to get them to slow down.