Gotta agree with Gary- this is definitely workable but may be a bit risky to your footage. I would suggest instead either renting two more P2 cards or buying enough so that you have 2 or 3 8GB cards. Then get the P2 store. It’s solid, offers push button simple operation you can do as a one-man band as need be and you could go all day with one.
I think it’s an important consideration when budgeting for this camera to look beyond just the body. If you’re doing long form shooting especially, you’ve got a substantial budget above and beyond the camera to consider.
Noah