You didn't mention where in Ohio you are or the route you intend to take. Be aware the I75 was shut down completely around the KY/TN border or in that area for rock slide. There may be an update to this on the internet but last report was it would be totally open around 04/15/16.
As far as over night stopping, we stay at the Flying J truck stops. They have an area usually in the front of the facility for RV parking. A lot of people don't care for that but then again a lot do. If you need a campground you would have to do a search along the route you intend to take and start making calls to be sure they are open. I would assume quite a few would be opening soon as the weather warms and you should experience warmer weather if not already in your area at least warming in KY. It's plenty warm here in Central FL. Temps of late have been low to mid 80's.
Hope this helps a bit and have a GREAT SAFE trip.
Steve & Sally
Hudson (Our Little Pom)
HiTee, Houston & Heidi (Forever In Our Hearts and Never Forgotten)
04 NEWMAR MACA 3778 W22
05 pt Cruiser Vert 5 speed
Demco baseplate with Commander Tow Bar
"Never try to outsmart your common sense"