You should fix more than the slight damage the trainer received. You need to get the aileron torque rods adjusted to give you less throw or on the control horn of the servo (move them out). I assume the radio included with this RTF package doesn't have adjustable ATV/end point. Reinforce the firewall whether it needs it or not, no ARF I've ever owned was sufficiently glued by any means. Get out some epoxy and hit the joints on the firewall, landing gear block, and those dowels inside the fuselage. The plank behind the rear dowel is cosmetic, you can throw tape over it and get in the air faster if the structure seems sound to you. Give it a little twist test to see if the structural integrity wasn't compromised in the crash. Consider this trainer disposable and to teach you to land, you're almost there and this trainer looks the same as any seasoned trainer I've ever looked at. Sounds like you stalled it. The simulator is a great idea, you can just walk into a Hobby Town and see a simulator set up for your free use and decided which type to buy. Check the nose gear. Flush out the dirt with some fuel. Replace the prop. A flying buddy or nearby club may get your going a lot further than trial and error. Also check the clunk in the tank, it's probably thrown forward and is stuck. Empty the tank and shake it back to the rear of the tank and make sure you hear it rattle inside.

The hidden cost of AMA and club dues may make the club idea more costly than buying 2 or 3 trainers.