One of which I just sold (had it 7 years) because I was tired of frequent turnover and high condo fees. 

What tax structure should we use?

All the value increases since then you will be taxed on.

Although, there are costs associated with forming and maintaining an LLC, such as state filing fees and annual reports that are to be noted. 

Can I use income from wholesaling to pay off my house without paying taxes on it.

Assuming 7.5% int (and I haven't seen a DSCR lower than this) at 75%, your Principal&Interest is already $1,337, not including property taxes and insurance.

My gut response is for us to sell at 2 year mark and collect the equity (tax free).

Next stop, city hall, so yea they charge landlords fees for AirBNB.

However, we have discovered that this may result in unfavorable tax implications for us in Europe.

We appreciate your business, and we hope you continue to be happy in your home.In recent months, property taxes and school taxes have increased, and the costs of labor, materials and insurance premiums have increased significantly.