RE: Ready to upgrade radio
MikeL wrote in the above post: "If electrics the size of your Super Cub are where your interest and budget are, you may want to look for something that includes smaller servos and a smaller receiver."
If you plan to fly a larger plane in the future, just use the servos that come with this combo in a future plane. Also, do you have available in your area a club where you might talk with operators of the Futaba radio and the Spektrum DX-7? As mentioned above, both are good systems. You might find you like one better than the other. I use JR/Spektrum. Others at my field use the Futaba. We are all happy with our choice.