A 4-bed, 3-bath rambler with a large lot in a high-demand area is bound to attract buyers.

(Tedious process)Unlike my other properties, where most applicants meet the criteria and need to see the unit to decide if they like it, this particular unit appeals to almost everyone (In this demographic)—but many fail to meet the qualification requirements.

It sounds like the Title Co. was not aware that the tenant prepaid rent and just prorated the current rent for the month of closing, so agree if they had no knowledge of it, would not have ever gone on the settlement statement as a credit to the buyer and they likely will not do anything post closing to help obtain those funds. 

Cash buyer OP will net less.

However, if they fail to meet any of the agreed-upon payments, I request that they vacate the property.Great suggestion.

most realtors deal with primary / retail buyers and sellers and they too aren't going to just walk properties for you. 

This will go a long way in creating a network and future sellers and buyers will start to see you as a resource in this arena.  

Many DSCR programs require an investor to have a mortgage history- there are some DSCR mortgage programs that will work with investors who are renting- some refer to them as first time home buyers (FTHBs)- DSCR loans are only for investment properties where the owner isn't living there. 

Doing that bit of pre-work might be the difference for a buyer being able to move forward.

@Tim Holt, Yes INDEED house hacking is the best option for most 1st time buyers.