I notice that was your first post. Welcome! Did you just buy the empeg?

If your upcoming trip is Very Soon, I'd say forget it and do it all with a laptop. Getting the kinks of the system ironed out for an empeg-based application will be tricky and take some time and some dry runs, with questions answered by the BBS members here.

Your biggest issue is that you'd need to do some hacking to enable a partition on the player to stay read-write the entire time. I think there's an extra partition that might be big enough that you could format and use for your own nefarious purposes. But it'd be tricky to configure.