Hi Bob,
I discovered the Batona Trail 5 years ago and set goal to hike it end-to-end 100 times. So far I have hiked it 35 times.
Unfortunately you're probably already too late in the season for bugs. Chiggers shouldn't be much of a problem just yet, but the ticks are definitely active now, with the exception being an unusually cold spring day when they tend to go dormant again. If you're going to do it, my recommendation would be to treat your shoes and pants with permethrin and carry some 100% deet with you as a back-up. When you walk through a section where you rub against the underbrush, check your pants frequently for ticks so you can knock them off of you before they have a chance to get inside your clothes.
With a few exceptions, the Batona Trail is marked a lot better today than it was when I first started hiking it, but it's still very easy to walk off the trail because there are many fire lines that intersect with it. So try and keep aware of the pink blazes. If you walk 5 minutes without seeing a pink blaze you've probably wandered off the trail and should backtrack your steps. I think I hiked it 15 times before I finally stopped accidentally wandering onto fire lines. LOL
I usually hike the Batona in the following round trip sections. Cut the mileage estimates in half if you're only going one way.
Coal Road - Evans Bridge (approx 17 miles)
Evans Bridge - Basto (approx 18 1/2 miles)
Basto - Lower Forge (approx 14 miles)
Lower Forge - Carranza Memorial (approx 10 1/2 miles)
Carranza Memorial - Rt 563 (approx 17 miles)
Rt 563 - Brendan Byrne Park office (approx 11.5 miles)
Brendan Byrne Park office - Ongs Hat (Approx 10 miles)
There are a lot of opportunities for shorter hikes on the Batona Trail too.
Good luck!