Tarot FY680 Upgrade help

[ControlThis]

Ok at the moment this is my setup.
Frame - FY680 Tarot Hexacoptor
Motots - Sunnysky 2216 KV800
ESC - Hobbywing 30a opto
Propeller - 12';
Flight Controller - NAZA V2 with GPS
Camera - GoPro 3+
Gimbal - Tarot T-2D Brushless for GoPro
Battery - Gens ace 5500mah 25C
Flight Time - 10-12 min

What I would like to do is very simple. Get a better camera as for taking still images its not cutting it.........But What camera and can my current setup take it? I was looking into possibly getting the Sony NEX5 or the brand new Sony a6000. I understand I will need a new gimbal and I was looking at the DYS Brushless Three-axis Gimbal. It will take both cameras which is fine. Basically in a nutshell can it be done with my current setup? If not what would I have to change or would I simply need a bigger rig?