Some quick updates-
I put a webcam, a microphone, and a wireless network reciever into the space I hollowed out. I hot glue'd them to the foam, placed a portion of the external skin overtop, and hot glue'd the skin into place. I am in the process of trying to cover my cut lines with serveral coats of flesh colored paint. If I fail to do a decent job of blending the cut lines- I can always go the cyborg route and place circuit boards ontop or I can make it look more horrorish by adding stuff like blood and stitches at the cut lines. So either way at this point I'm not too worried.
I took a few gambles without testing. Im hoping that being encased in foam has little effect on the wireless reciever. I probably should have tested the microphone in its current position prior to resealing the head. I dont consider these big concerns.
Some updated pics:
From the angle in the next picture you can see the microphone holes thru the opening in the cheek.