You can Host Finacial revenue tool to get an average of the income.

This aligns with my interest in passive income.

I would like to build a duplex on it for long term rental income.

While institutional lenders would probably need a number years proof of collections before considering the income from the wrap, private lenders, such as myself would look upon the situation more favorably.  

As already mentioned, you could sell via seller financing to lower AGI, as all you would have to claim is the payment income - until balloon payment received.Did know an investor that had 14 properties paid off and he moved into one every two years to then sell with the $250k single exemption.

Every where you turn there are STRs going up on the market fully furnished because they couldn't pay the mortgage and bills with the rental income. 

For me personally, our STR and our little inn provide more than half my family's income so I feel I have a fiduciary duty to my wife and kids to maximize that. 

Just make sure you use a very honest agent that doesn't sugar coat anything and check the crime statistics and household income.

When you sell a property that has been depreciated, the IRS requires you to "recapture" the depreciation deductions, taxing that portion of the gain at ordinary income tax rates.

Not a lot of our competitors offer this but it's something we can consider (but for us, it can't be in a rural area, the loan amount must exceed $150k, if we're using PadSplit income (or STR/MTR income) the max LTV is 75% and the down payment must come from your own funds).