My answers=
1)UBEC 6v (4s lipo down to 6v, 10A BEC using common negitive with RX)
2)Lipos (4s main flight battery)
3)Cam on tray
4)Tilt-only control from the main Tx/Rx
5)Netbook, 1.6G 2G RAM XP. BSOD every time I try "monitor" tab. Requires reinstallation each time after BSOD - slightly...