thundercat:

If you don't have the top hatch, make one. Be sure and replace all the fuel lines, check the stopper in the tank, make sure its not leaking. Pack foam around the tank.
I don't know what equipment you have: Transmitter, receiver, servos, etc. But, check it all. It would be great if you could take the plane to the flying club in your area, and have the resident pro's check it over.

With an instructor on the "buddy box" with you, I think this would work as a trainer.