I would think you would have no problems with that, your receiver pack should be able to deliver all the amperage you need. The capacitor fix is for speed controls that can't deliver enough amperage for the newer servos.
I was having problems with my spektrum completely cutting out at full throttle and driving itself into the wall at full speed , and I started thinking that it might be my esc not supplying enough power to the receiver under high load, and then it has to try to find the signal again once it cuts out so there isn't much chance of regaining control. Has anybody else has this kind of problem?