Combining my experience as a guest in cabins with some knowledge as a manager of a few houses with them:1 - Patio. 

If it’s a combination heat/ac unit that runs on the older Freon and just the ac needs replacing.

This RE investing combined with a W2 job is stressing me out.

You can have handful of LLC to combine 2 to 3 property based on location and value of the property.Disclaimer: This is information purpose only and not be taken as legal advice.

Utilize a combination of both to maintain that truly personal touch.

If yes move forward.Whatever combination of units you find you can do the same as above and you have a solid first look.

Make sure your portfolio and goals align.2) Global real estate portfolio review - Look at all your properties and investments combined.

If its not selling its , location , price , or condition or a combination of all 3 

Although, this is one of the toughest cash flow markets I've seen you can still occasionally find deals that make sense when combining strategies such as value add and rent to own, or short/midterm rentals.

Not a good combination I'd say-maybe even a lot worse.Don't stretch yourself too thin.