I don't think it's insulting at all to give him the advice that he doesn't yet know he needs. That's better than saying nothing and seeing a post a week or two later about how he broke his airplane.

bbrown2828- If you haven't already, hook up with a club and get some flight instruction. Even if it costs you some money, it's cheaper than going at the hobby alone and learning from mistakes. The other thing to set up on your airplane is the center of gravity and control throws. Your manual will have the recomendations for those. Put your CG near the front of the range and balance your airplane laterally by hanging it on the prop shaft and rudder hinge with string.