the downloading onto the pc isnīt the time consuming part, obviously you have to be around in the office, every hour tape, you need to reset another tape in the camera.
The tapes should be 16x9 hd anyway, so no stress there, just the point you only have 14 hrs in a day and the rest, you sleep, so itīs going to take a week for 50 hr of video...
maybe set up a couple of pcīs or laptops with a couple of old hd digital dv cameras?
if you send them in transport, by post etc, they could go through postal scans or testing anyway. Iīd suggest doing it in house like Grapesoda said
