I grew up in Ross County (one county east of Highland). Most of SW Ohio is gently rolling to "hilly" The SE portion of the state wasn't bulldozed by the glaciers so it's the only part with "rough" terraine. Lot's of farmland in the counties you mentioned. You can find some real trophy deer in this part of the state but don't be surprised to hear the crack of a poachers rifle too. I couldn't tell you how many times my buddies and I tried to get the game wardens to be a little more proactive in Highland County. I've been in TN for 5 years and hear it's getting better up there now. Before you go, get the phone numbers for the game wardens in whatever county you'll be in and don't be afraid to call them about poachers.

If you're interested in paying a little money for a "guide" or some insider info, shoot me a PM and I'll forward your contact info to a friend of mine in Ross County. One of THE best deer/turkey hunters I've ever met. He may be willing to help you get private land access in Highland or Ross.