Time has come to Convert my DX6 Transmitter to a 6ch Pistol

Been wanting to this since last year when I bought it
I will do my best to list details in radios and anything that may help others do the same.
I was all gung ho until I found the Differences in radio's:
The DX6i has smaller electronics boards than the older DX6 and just uses 4 AA batteries, the Dx6 uses a rechargeable pack.
This puts this build into a tough challenge because the LCD PCB board is 4" tall and cannot fit into a standard Pistol style Radio. So if you already have a DX6i you should not need additional project box's to fit the components
I think I will use a DX6i instead
My options:
1- My first idea was to Use a Game flight controller and use the base for the battery and all the electronics PCB boards and then add a Plastic box on top of the Flight stick to house the Steering wheel and other controls, maybe do some mold making.
2- Sell my D6 and get a DX6i and modify A standard Pistol add a box on the back side for the electronics and LCD.
Any idea's or thoughts on this guy's ?
DX6
DX6i