If property management costs $40,000 or $80,000 per year, you have to ask yourself if you're willing to stay put and keep working for that amount or if the beach is what really calls you.As others have said, it's a seller's market so you may want to consider selling at least some of the properties and investing in something that produces a better return with less effort.

Although the pandemic situation has resulted in a huge reset across industries..

She gets results!  

Whoever pops up in the search results are your local wholesalers.

That being said, I am more concerned about your assumption that putting $5,000 into the property will result in the $35k value increase you have in the calculator

Entitling the land produces value with paper lots.

If for some reason you want to pay it off sooner you can or better yet invest that cash flow into other income producing assets.  

Only thing is that I recently started a new business less than a year ago that produces a ton of cash but I pay myself a modest salary. 

I have had excellent results getting emergency rental assistance for tenants.

Have had mixed results with them.