I do think bonusing her on getting and or maintaining 95% occupancy is a good incentive.

Reason is the property has been maintained, it has a tenant and cash flowing and it's a good way to get your feet wet without starting from square one, and you may walk into a situation where you have equity.

My goal is to determine if I can still use this LLC as a holding company while maintaining liability protection.

If I maintain proper records I can't see why the personal credit card is a bad option.Any opinions?

Regarding OH specifically, some good info on the OH secretary of state website:https://www.ohiosos.gov/businesses/information-on-starting-and-maintaining-a-business/starting-a-business/Scroll down to...Guide to Starting a Limited Liability Company in Ohio

Many wholesalers fail to understand the long-term value of maintaining strong relationships with buyers.

LLC is VERY IMPORTANT to organize in the correct states that don’t require formal records to maintain separation between LLC and personal.  

Technically, I don’t occupy the space but I own and maintain (furnish, utilities, etc.).

You'll also want to have plenty of your own capital in reserve to deal with vacancies and repairs.I imagine a lot of the tenant-landlord problems can be prevented by providing good customer service and having clear standards, both in who you rent to and how you maintain your property. 

Client Relationship Management: How can agents build and maintain strong, long-term relationships with investor clients?