I always like to look at several years worth of property taxes.

In Michigan, the ultimate garnishment is state tax refunds (federal cannot be garnished).Not seeing how you are going to successfully do this on your own - remotely:(

Cash flowing markets, low taxes, landlord friendly and large demand in renters. 

@Bradley Buxton makes a very good point to make sure to do your due diligence as you won't be an owner occupant like your in-laws.Last bit of advice: Because this is a friendly deal, you want to take your time to make sure you structure it in a way that maximizes tax and cashflow benefits for both parties. 

Wyoming has no state income tax.4.

My son currently lives in the townhouse b/c he is going to school and works in the area.Since he is young and starting out in life, I would like for him to only cover the basic costs (taxes, HOA, utilities) just enough for me to break even (I believe that will put him slightly little lower than market rent rates). 

I'm not a tax expert, but I work with them.

Besides lists from the tax assessor, how are you finding your deals?  

A miscalculation can eat up your profits fast.Speed is Key – The longer you hold the property, the more you pay in interest, taxes, and utilities.

@Ross DerouenBigger Pockets is a great place to find an accountant specializing in real estate taxation.A good real estate accountant can save you thousands of dollars by leveraging entity selection and formation, tax deductions, cost segregations, bonus depreciation and tax planning.I recommend finding an accountant specializing in real estate taxation, business taxation, financial planning and tax planning.Consider working with your accountant remotely to expand your options.I would also recommend looking for an accountant willing to work with you throughout the year.