We have an older guy in one of our clubs that flys a Senior Kadet with an old and rather worn O.S. .40FP
It floats around like a helium filled balloon...

There's just enough power for him to fly it w/ skis in winter.
A TT .46 Pro will fly a Senior Kadet just fine IMO...it will also fly a Hobbico .60 size trainer better than adequitely...BTDT.
A trainer doesn't necessarily need to be over powered...
The Tower trainer for example, with a TT or O.S. .46 AX or similar, can be pretty hot...for a trainer.