These things are a whole lot tougher than you might think, they are pretty simple and there is a great forum (droneracingpilots.com) with great people that helped me get started just a few short months ago so that helps a lot too.
I would look at a Furious True-D fpv diversity module for your fatsharks, you can get something that looks similar for half but trust me you won't be happy so it's wasted money, that and a set antennas and you're done with goggles.
You can't beat a Taranis QX7 for an inexpensive RC that does everything you will likely ever need and can grow with you over time.
If you can get stuff from Banggood etc, and you look for things to go on sale over the holidays, you should be able to save a bunch.
I am flying 3 Eachine Wizard X220's I got for US$99.99 each, added an XSR receiver for $14.99 each and I am in the air with backups to spare. You will blow a few ESC's and bend a few motor bells, if you're really careful, and you will do a bit more damage if you're not, but I bet you the time of your life!
Cheers Mate!