Sounds like you have a good plan in place. It also sounds like you aren't afraid to try new things.
If you are going to Ohio, or anywhere in the US, and fancy the unusual and less typical stuff to do, you can try here: http://www.roadsideamerica.com/
In the upper right corner, just choose a city, a state & search. I use this a lot when I travel.
Like weird and/or scary? Try this site: http://www.weirdus.com/states/ohio/index.php
As someone who frequents OH to visit family, I subscribe to several online Ohio newsletters.
You can go to Visit Ohio websites, and there, you will find lots of things, like calendars of events, historical places, etc.
You can check out Cleveland, here: http://www.cleveland.com/entertainment/
Whether you just want to hang out at the Rock & Roll Hall of Fame, ride crazy stuff at amusement parks, or look for Bigfoot, you can do it in Ohio, the Buckeye State.
Hope this helps.