RE: More Radio Advise
Right now you can buy some very good used equipment on 72 MHz as more people are switching to 2.4 G units. Often with extra receivers for next to nothing. You can fly analog servos and 4.8V nicad packs. Lots of good used equipment available, RC has never been cheaper to get into. My first 4 channel radio with no dual rates, servo reversing or anything was around $400 in 1970. That would be over $2200 in today's money. The best radio you could buy in 1970 was junk compared to the cheapest radio you can buy today from any of the major companies.
But if buying new, save up, get the computer radio with at least 6 channels and get it on 2.4G