Not that it's a big percentage of the whole pie, but from Twin Grove to AOAA is an additional 50 miles round trip each day compared to Rausch, much of that not highway and not flat. So for me (towing) the extra $25 in fuel plus hour+ of driving per day is lame, I'd rather spend more time wheeling and less miles and fuel in the tow rig, even if that comes at what would be a small net premium for me in cost. 'more time wheeling' also being that we spend half the day + just getting to and from the stuff to wheel on at AOAA most of the time.
This opinion would change a lot if we were camping at or near AOAA, but that's obviously not in the cards for this trip.
Just my perspective.