My daughter has outgrown her current bicycle, she is 10. My neighbor has 2 walmart bicycles that have been sitting out in the weather for who knows how long. My question is should I get one of them and rebuild it for her or just buy her a new one. I have no idea what it would cost to work on this bike, but I kinda want the experience also. Will it ever work correctly with after market parts or is it a waste of time?