I do know that the more complex/custom you make it, the harder it is to maintain.   

Manage the Property: If renting, manage it effectively and maintain communication with the seller.Advice and Tips:- Educate Yourself: Understand legal and financial implications.- Build Trust: Establish rapport with the seller for ongoing communication.- Be Clear: Define all terms clearly in the agreement.Mistakes to Avoid:- Incomplete Due Diligence: Conduct thorough inspections and financial analysis.- Unclear Documentation: Ensure agreements are well-drafted to prevent misunderstandings.- Market Trends: Consider future market impacts on property value and income potential. 

You need to ensure the work is done professionally to maintain a safe living space.

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.