All I'm going to add is make sure you go with quality items.

There really is no area to save money on these things.

I see guys all the time try to get into gas planes and they go buy some junker airframe, marginal servos, and some engine I've never even heard of and then they get out to the field and have nothing but problems.

I think the best piece of advice is to see what the guys at your field are flying and choose something similar. If they are flying Aeroworks airframes, Hitec servos and JR transmitters, chances are they know how to set them up and will be able to assist you should you need it.

If it's working for them it will probably work for you too.