The best thing is to probably choose a trainer that is sturdy. Get recommendations and get someone at the club to go over possible ideas to beef it up. The landing gear is a very good candidate for heavier duty gear/nylon bolt attachments. Maybe use triangular stock to reinforce the firewall as you build it. Things like that go a long way in keeping your plane flying as you punish it by your learning.

A guy crashed his Kadet 40 today. He soloed only a few days ago and got his left and right mixed up when landing. Since he built it from a kit, he knows exactly how to fix it. It looks like an evening of work, no more. He was confident that he could get it flying again soon and that makes a big difference in how you feel when you crash one. Knowing how you built the plane really helps.

If you buddy box with an instructor, follow his training, and fly within your parameters you will have a big chance in flying a long time before something happens. You will also up your chances that when that something happens it won't be too bad, and may be repaired at the field with fast CA and 5 minute epoxy. For example, I lost my main gear on a hard landing once, and was hit by another guys plane. His prop chewed into the aileron and cut a long rip in the bottom of the wing. I was flying again in less than half an hour.