Popriv:

I believe the model is repairable.

As alternative, I recommend the Goldberg Falcon 56.

I soloed with one built from a kit, which plan specified a 0.35 engine (as available in the 70's; today's engines are more powerful).
It is an excellent advanced trainer, 56" span, ailerons, and semi-symetrical airfoil.

It is sold as ARF nowdays, for 0.40 engine.
I easily take-off from grass with a bushed 0.40; hence, your engine will be sufficient.
There is a video and review at Sport Aviator (AMA website).

Flying an overpowered model will not teach much flying skills, but will make the "when" happen sooner.

I do not recommend jumping from a 0.25 model to a 0.60.

Regards!