RE: buying a radio
Doesn't the Futaba 6 have only a few model memories?? Sounds like you could use a lot! I came back to the hobby and got a 5 channel computer radio from Hitec, the Flash 5X. After about a year I really wanted more features, mainly programmable mixing and more flexible switch assignments, so I got a Futaba 7C. I really think the Futaba 7C at about 150 bucks for tx only is a great deal.
Don't get a non-computer radio! For just a few bucks more you get the features Ernie talked about and once you setup servos with endpoint adjustment, subtrim (adjustable center) and dual rates or expo you just can't go back to the dark ages. Treat yourself! Plus many model memories (7C has 10!) are nice because you can get used to the same tx layout for all planes and not switch between different models, sizes, stick tensions etc...