Has this property been working for a while with a track record of income performance?

The interest on the rental is an offset to rental income, and is by definition deducted from your taxes.A 4% interest rate on a primary is like a 4.88% after rate for a taxpayer in the 22% federal tax bracket, or higher if in a state with state income taxes. 

My daughter is an Agent in Vegas I suspect they are going to get a lot of overflow as well since there is no income tax there and prop taxs are basically the lowest in the nation.. my mid term rental I have there has routinely been leased out to insurance companies paying for their clients that had a fire .. or this last one they were building a new personal residence that took over a year. 

@Rae Chris Ann Arbor is pretty expensive, so difficult to find cashflowing rentals.You may want to look in Ypsilanti - if you want to stay in your area.Otherwise, Metro Detroit offers a LOT of options.Read our copy & paste below for some helpful info:---------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

Consider duplexes or triplexes that can help offset your mortgage and provide steady income while you figure things out.

If you use niche.com you can pretty easily find median home values, median incomes, an some data pretty easily.

Income?

Screen them as you normally would - does their income substantiate their portion of the rent +/- a little for changes in what the housing authority will pay out?

You can have multiple conventional mortgages and have a great credit score as long as you don't pay late or get too close to the maximum debt to income ratio.

Given your experience with RV parks and MHPs, you already have a strong foundation for managing mixed-income streams, which will be valuable here.