I own a JPW Supper Cutthroat 2 with the wide frame(19" tubes 14') and it is a great low water boat and mini gear hauler. It could easily handle what you are talking about.
That having been said, for airline travel and packing it in it would be a bit bulky and the frame is a bit of a pain to put together. I would take a hard look at a Culebra or Shredder. With 2 people you could R2 it down some pretty gnarly stuff and I have seen people rig up some fairly simple oar frames for them.
The last thing I would want to do after packing my raft and gear down some hot trail into a canyon is to spend an hour putting my frame together and getting it rigged on the tubes. With a paddle cat you could just blow it up, strap on the dry bags and go.
Damn, now I want one.....