I would use LiPo's for sure as they are the best right now in terms of the weight-to-power density ratio. Testing with Lead acid batteries is ok but for a final version, you'll want LiPo's.

Ok thanks for your input.  BTW Zac is going to call me Monday.  also FYI I have had everything on now for over three hours and No camera or MPU drop outs going to leave it on for another three hours and see if we will be ok...   The head tracking is on so as I am working here at the desk the servos are moving the head around so things are working well right now LOL.