RE: how long would it take to fix this damage?
There's always something cool about a trainer that you've wrecked and repaired over and over. Also it makes a good test plane. Right now I have my twice repaired trainer loaded with an engine to break it in. I'd rather put it on a good plane when it's all dialed in. That damage doesn't look that bad anyway.
So htis one retired guy in my club calls my trainer "the quilt" because it's got all sorts of scrap covering on the repairs. Different colors all over the place.