You could use Lightbridge if you were planning on upgrading your controller, gimbal, and camera.
1. The controller you have does not have a Gimbal knob, therefore you will need to get a Futaba or something like it with at least 8 channels. ($500)
2. You would need a camera with HDMI out (not available on PV2+ stock camera), so you will need to buy a GoPro ($400)...then...
3. The Gimbal needs to be replaced too to hold the GoPro ($400).
In short, you'd be better off selling your PV2+ and adding the parts to a base model P2. You're looking at the additional expenses
$1400 - Light Bridge
$500 - Controller (If you don't already have one)
$400 -GP3+ (If you don't already have one)
$400 - Gimbal
Total - $2700 (Minus price of base P2)
...Perhaps you can sell of the parts you dismount as spare replacements to help with the added expense.