I've been flying the Tower Trainer for over a year with no issues. I modified it to a tail-dragger for grass. So the only real reinforcement was where the new LG attached. You do need to hold more down elevator when inverted, so the comments about it's aerobatic capabilities are probably on-target. The Tower Trainer is pretty docile with a .46 up front, however when I open it up and switch to high rates it does all that I ask of it.

Any of the choices will probably work well for you. Actually, I'd recommend spending time researching which radio and engine you'll want/need as those two aspects of your training set-up will also have a big impact on your overall impression with the hobby. It took probably a good 2 months for my engine to fully break-in. During that time my instructor and I had to retune it almost every session.