After much testing and multiple purchases I have found the official raspberry pi 7" touchscreen is the best option with the least amount of headache and seems to draw the least amount of power, complete draw for camera, 7" touch display , wireless keyboard and wifi is at .37 amps…
the official 7" draws power off the gpio pins or from usb from the pi.
I will do a write up with instructions if anyone is interested. pictures will follow later today
