An OS 40LA will fly it ok OS 46AX or Thunder Tiger Pro 46 are better choices.
As for radio?
I would hope you plan on getting an instructor at a local club, if so you should match brands with him so you will be able to buddy box with him.
4 channel radio is enough, 6 or higher computer radio is better.
How much you spend should reflect on how sincere you are about sticking with this hobby.
If you are not sure then just get the basics, you can upgrade later.
Again, for best results get with an instructor.
Best luck.