I suggest you post this question in the "Creative Real Estate Financing Forum" with a more descriptive title.

Unless stated in the description I have yet to see Zillow specifically post if it is tenant occupied.

The terms will be more conservative, likely 30-40% down and 10%+ in reserves.The key with retirement plan investing, and where this might be a hiccup based on your description is this....  

For me one of the hardest things is picking the geographic area to focus on.

It seems they work best in larger population areas, but recently I've seen some pop-up in smaller geographic areas that share characteristics with where I am - Bozeman, Montana.

Correct me if I'm wrong, but it makes sense given the description of your strategy.

It may imply that buyer preferences are for rental properties instead of home ownership (i.e. geographically closer to work, a preference for community living instead of suburban living, home price unaffordability, etc) which again leads to rent appreciation.

The best advice I can give you to get started is to select a small geographic area that you like and become an expert in that market.

There are drawbacks to every geographic area, investment strategy, etc. 

You will find many listing agents who are either ignorant or lying when they write their description for a property west of Holton Ave. as being in Riverwest.