I have a collection of 4 buildings (still negotiating 3) on a D+ street that I believe some reasonable aesthetic improvement could attract a C- crowd.

Just have extra cash as renos notoriously go over budget.

I am trying to determine our real cost of having one extra person live in our household.  

That extra $50 isnt going to hurt me over the next few months.

I actually gave myself almost 100k buffer in the overall build cost just to make sure it covers all the extra cost.

Typically you would offer free lot rent and maybe even a few hundred dollars extra per month depending on how many duties you need the manager to carry out. 

It may sound nice to pay a 5% management fee but the extra fees can add up to be more than the other company that charges 10% with no add-on fees.

If you can refinance it and use the funds to then go forward then you already have an extra property by not selling.It is hard to predict the future - nobody predicted a pandemic - and so if you have cashflow then I say stick with it and refinance instead. 

I first go the extra mile to help them most reciprocate those who don't aren't worth the time to type about. 

There was ALWAYS extras...Just don't count on them to respond quickly to an emergency.