Thanks for the responses so far.
ticks: The tick info tends to rule out dates later than mid April for me, as does needs for my time at home.
resupply: The book indicates post offices at Pelsor and Ozone, that serves the eastern end of the trail pretty well. But leaves an 85 mile stretch on the western end. I should be able to handle that without resupply, or maybe one cache.
regarding the trail: The guide book provides excruciating detail about the trail route. Is it gonna be necessary to hike with the guidebook in one hand or is it easier to follow than that seems to imply?
regarding direction: Looks like the western half provides more elevation changes than the eastern half. That nudges me towards walking east to west. East to west also puts the longer resupply leg at the end, which I'd prefer. But Ernst's detailed instructions are written for west to east and I don't mentally flip that kind of thing well. Any other factors I should consider?
Ernst's guide book suggests that March is often wet. I've reviewed climate records for Ft. Smith (12 years) and Little Rock (20 years) and it's clear that I should plan on wet weather, maybe very wet. That gives rise to some specific questions.
1) The east end involves a) fording/swimming the Buffalo River (seems unreasonable for the wet season or b) 15 additional miles on the Buffalo River Trail or c) exiting approx 10 miles early, requiring fording Richland Creek. I think I'd lean towards the Buffalo River Trail but anyone out there know if Richland Creek would be an easy ford?
2) Does the much of the trail's treadway get extraordinarily slippery when wet?
3) How about at campsites, does the soil off trail drain reasonably well? My first choice for solo is a floorless shelter with polycryo ground cloth … I'm somewhat picky when choosing tent sites but some soils don't handle ANY moisture well.