RE: Which first plane?
Ha ha ha...you made me laugh... Try about $4500 (and that's cheap) and probably a good deal of stick time before you are even ready. Best course of action is to get involved with your local R/C Flying club and get started there. They may have a club trainer available which will give you a go at the sticks. Driving R/C cars is a skill all in itself and can be difficult to master if your one who competed. But flying R/C airplanes let along turbine jets is a whole different story.
Find a club and ask lots of questions.
Wish you the best...