Try this site they offer a lot of kits and the price is not bad either; I have bought both of my lightning streaks both Baby and Jr. and their service can not be beat.

http://www.virginiahobbysport.com/kits.htm

Good luck with the 1/2 flying they have proven to me to be like most things small and having critical mass it does not take much to upset them. Kinda hard on the beginner but I guess you have to start somewhere.