In the long term over several years, interest rates and returns on tax liens should go up, as investors will only be able to value the interest rate as the return on their investment, with no potential for a property windfall. 

C+ to B+ buildings with value add potential. 

The potential appreciation going on in the area as its being revitalized.

Another question, what percentage of potential buyers end up exicuiting the purchase option by the end of the term?

And then you add PM on top of that.. that can't work.We still see feasible deals, like a duplex for 300k renting 2 x 1250 with the potential for more.

What is the potential scenario looking like ? 

Wondering what, if anything, I could do to spruce up the place to make it more attractive to a potential tenant OR if there are ideas of what I could personally do to it that would create some nice cash flow for me (co-working spaces, etc.).

DSCR Loans are going to be standalone 1st liens too (in addition to can't be used on a primary) - you should look into a HELOC or closed end second potentially

Additionally, there will be a 20% annual increase in taxes every year until 2029, at which point they are expected to stabilize at their maximum rate.What would the "full potential" tax amount be in 2029?

Running one AirBnB out of a studio apartment or mother-in-law suite is a great way to live for free and potentially cash flow.