RE: DX7 v JRx9303
I love the X9303 but for a beginner it's like going deer hunting with a Howitzer. I'd stay with the DX7 it will do everything you should need it too for the next year or couple of years. At some point if you need the extra channels or programming I bet they will be a lot cheaper than they are now. One other thing the X9303 will work with AR7000 RX's so if or when you would upgrade you can still use the X9303 with most of your planes.
Spend the extra $20-30 and get a good RX nimh battery...
DX7 at myrcsupply.com is 291.58 + shipping might be cheaper other places