OK, it's been 40 years but this is what I'm thinking. Spektrum 7s transmitter and an Ares 370 pro with the addition of the non- aileron wing. My main question is should I buy the 7s with or without the reciever? The price difference is about $40.00. $299.00 with the AR7000, $259.00 without? What to do... What to do... Any sugestions?