I think the first thing you should do is see what type of replies you get here. Most Hobby Stores are good but there are many who have idiots behind the counter and will sell you things you don't need nor have any idea what they do, what they're for or even what they are.

You ought to look around for a club and see what kind of support you get from them and ask advice before you start spending money.

They make "Trainer Combo" Arfs. These come with a plane, radio and engine for a good price. You could spend much more if purchased separately. You will need additional ground support equipment but that can come in time