Lipos are definately nice and if its in your budget go ahead and do it. In this case it will probably be expensive for him to get into. You'll need a different ESC(or a low voltage cutoff) 30-$100's, a lipo capable charger $40-$150, lipo battery, 50-100's. So, if you get off cheap your probably looking at $120 which isn't too bad. You'll like the performance and runtime advantage if you can afford it.