Hi Dave,
Thanks for the super quick reply. Yes, we actually did look into that as well, and that could still be a possibility. We've done the one-way trip before (actually last year doing Glacier, Yellowstone, GTNP and on over to SLC). I've actually priced flights, and they are surprisingly affordable with the one-way tickets (very close to the same as a round trip, believe it or not). We were just concerned about a time crunch with a loop trip. Do you feel that we could just as easily do the loop in the time we have as to do the one way "zig-zag" style trip?