I think you'd be better served to turn the STR unit into a long term rental.

But I always like to point out what I think may be a good alternative for small investors owning less than 5 currently mortgage properties.

I think there is a tendency for people to believe Property managers can make all their problems go away especially in C/D type properties.

This is such a delusion most people that invest in SFH has and I think it stems from bad BP educators.

I sell houses all the time by just listing them on Zillow, so don't think you need to pay a listing agent and if the buyer doesn't drag their realtor into the mix, you might not need to pay a buyers agent either. this is a cautionary tale of the risks of remote rehab with little to no experience looks good in the book but in practice can be very very difficult.. stick close to home.

I don't think house hacking, at this point due to my family situation would be the best idea but I appreciate the idea! 

100 year old and if you think $50k will get work done, double that cost. 

Pro tips: Boost credit (aim for 670+), get pre-approved, find a savvy lender, and get creative—think home equity lines or teaming up with an investor.

You think everyone just stock piles cash for RE?

It's a little pricey but I think it works great.