RE: receiver choices
Well, not to belabor the point (I know, I am):
The AR500 is a full range receiver. When I referred to PF (park flyer) receivers, I was referring to the AR6100 receiver that is 1/4 the size and weight of the 92824, and less than 2/3 the price. If you want to go even smaller and fly micro (aircraft weighing less than 1oz), you can even get an all-in-one "brick" unit with two servos, receiver, and an ESC all on one board that weighs in at 3.25 grams. (see photos below).
Since you are stuck with whatever brand of TX you choose for 2.4GHz, just be sure that you are going to be happy with the RX options, and the upgrade TXs available. Spektrum has a large selection. Futaba is getting there. Airtronics is just starting out, and initial selection is limited. Hitec will give us yet another 2.4GHz choice soon.