I just bought a RD 6000 Super for my brother to fly with us when ever he wishes to. The RD 6000 is a lot of radio for very little cash, I think it will do fine and carry you a long way as you progress in your skill levels.
The 94322Z servos are a good choice in AT's servos these come with the Super as a heli version. They are decent servos but surely not the best they make, but BB with transit time of .19 or .20 I believe. They hold the tail fairly well on my wifes heli too.

I prefer a faster servo so I use JR & Futabas for a gyro like the HH of Futaba. As FF said, the Futaba GY 240 is a great gyro with the right servo.

The OS 50 has a lot of advantages over the OS 46. The OS 50 has a more dependable carb (MHO) only here. The older OS 46 with the original carb ran a bit sluggish and the transistion is great on the OS 50 as well as a great idle. Power is another dept. the 50 excels in too over the 46.

I use 15% Cool Power green heli fuels works fine. Its a lot less expensive than 30% as said above..