Unfortunately, I know she is not interested in renting the place out.Another option that I've thought of is that my wife and I could buy the house from her if she were to supply the financing (as we cannot afford a mortgage on that house now) and then we could sell the house after living in it for two years and also get the 500k federal tax deduction.

The power supplies go bad in them and USB will be replaced in the coming years with USB-C.

Downey Janotorial Supplies. 

Admin work, social media, online stuff, phone calls, pick up supplies from Home Depot, etc. 

Leaving out key facts such as the sellers could make a significantly more money to list FSBO or using an agent is completely different then getting into the minutia of how title and escrow works; or the intricacies of how a global supply chain and distribution network that was built over decades works. 

is it better to wait until the risks of increasing supply and economic slowdown subside? 

The repairs are high in the 2016 P & L because the owner had stated that he put some home repair supplies in there ($4000 to be exact).

We still have lack of inventory and supply keeps dropping.

I understand this may be different in different areas but was just curious if there was an average/rule of thumb on how much you could increase rents if you supply the units with a washer/dryer for the tenant instead of just having the hookups for them to supply their own.

If this is true, it's likely the supply of affordable housing in Providence, Warwick, Pawtucket, West Warwick, Central Falls, North Providence, South Providence, etc will remain extremely tight.