I ordered one of the planes a short time ago. I'll go ahead and get the gear box setup as you suggested. I have several motors/ESC combinations at home that may work out just fine.
I have to see what the weight works out to be so I can properly figure out what to use.. as I said, I have several combinations to use. The only geared setup I've used so far was a brushed gizmo that didn't work well.. it was what came with the particular model and was somewhat lousy quality. That setup you suggested looks pretty solid.
I do have a brushless in-runner that I bought a year or so ago that is brand new. I believe it's a Park 400. It's not a helimotor, though. (notice how I kept within the topic of the OP.. just so I don't get "yelled" at

) I actually have a pair of them, used one in a ducted fan setup that gave me some pretty awsome power.
This ought to be a fun project. Looking at the wing, for instance, it requires something that I've not tried yet... foam core sheeting.
CGr.