Let's look at a better idea. You already have an engine and I'm guessing a radio. Go and get yourself a Kadet Senior. It's a 60 sized plane that is designed to help a beginner learn to fly. The Mustang is, at this point, a crash waiting to happen(as pointed out by the others that have posted here), so leave it in the box. In all honesty, the Mustang would be a better third airplane. I would look at a Sig 4* 60 as a follow up to the Kadet, then the Mustang. You can use the same engine and radio for both the Kadet and 4*, so it's just a matter of buying the planes themselves and a flight pack for your radio. A flight pack has a receiver, battery pack and some servos. You can also go buy the receiver and stuff as individual pieces as you need them