Just wondering the best way to shoot timelapse of a CAT machine being assembled with either my HPX500 or HVX200 locked off. Want to shoot 720p 24N. Basically want to leave the camera at the site plugged in for a week. I have 16G P2 cards, which gives me 80 minutes record time in the camera without changing. I figure I can hotswap if I need to... anyone done this before?