First of a decide a weight class , from what you have said id recomend a feather weight.

some fetaher weights ( FW's) can push around a small child but 2 drill motors wont be up to it. If you want something with more power consider 2 electric scooter gearboxes or look at gold motors ( ask around).

As for the transmitter , planet t 5 2.4 ghz set £ 35 and you got a transimter receiver and on 2.4 ghz !!!

Good luck and welcome to the forum btw .