Fourth, I'm not sure that you have to cut all ties to your former state. I know a number of snowbirds who live at least 185 days / yr in FL, but live the hot summer months in OH. They've been doing this for years. They own a condo in FL. Theirs cars are registered in FL and they have FL drivers licenses. They probably have other FL registrations and ties. But they also still own their OH home. They are not physically in FL for all 185 days because they travel.
Doesn't mean the other folks are legally off the hook, just that their domicile hasn't been challenged.
Remember, it is the state of Ohio that may challenge your choice of domicile, it is their rules that should be of primary consideration.
Here's a link that provides some info:
Ohio Department of Taxation > ohio_individual > individual > information_releases > it200708