Upgrading my cheap Hong Kong Import CAM/TX

[AGS 0]

Hi guys, I have been working on a project putting fpv on a trex 450 and I need to make everything as light as possible.

I am going to use a 11.1v battery to power the heli and the camera/tx I have a 2.4 ghz import but according to the 1.2 ghz system here http://www.rc-cam.com/hk_video.htm the tx needs 8v and the camera needs 5v. I have ordered a sony 1/3" CCD to supercharge the video quality but it requires 12v instead of 5v so I need help.

I thought about puting in a 8v regulator and letting the camera have the 12VDC (11.1v) direct.

But something simple has confused me are the positive and negative wires carried in one where they go into the camera and tx, here http://www.rc-cam.com/imagehkv/cam_rf2a.jpgand also does the regulator (5v?) step down the 9V input into two seperate voltages here http://www.rc-cam.com/imagehkv/vreg1a.jpg is that possible?

Any help will be really appreciated thanks.