That is a great truck no doubt. But...putting 20k in a truck that's arguably worth 6-10k still makes it 6-10k. Plus you never get your time back in the value of the truck.
At 16 or any age your skills are amazing and I am envious! The truck is far better than I ever plan on mine being. Keep up the good work. Your truck will sell for that amount if your not in a hurry, imho