While they were likely notified, they probably don't understand foreclosure law and lien priority. 

It looks like New Britain has the best ROI, however it also has the least amenities from what I can see.

If you can't identify why an investor would want to buy it - you'll likely have a hard time moving it

They looked like a good diversification investment.  

It seems like an uphill battle and I'm always putting out fires.

Currently, the house looks like a warzone, with huge horizontal cracks, buckling, and crumbling drywall everywhere.

I sent you a direct message, and I'd like to connect and speak directly with you before responding to your post. 

Seems like I could possibly get a duplex with that kind of down payment. 

I do not understand your remark as related to the DSCR loan.  2 ADUs are not allowed by f/f conventional financing but is not always enforced.Fortunately if you stay with the current tenant without a refi, by the time you pay principle it is likely the rent will have increased enough to absorb the increase mortgage payment. 

Without knowing all of your specifics, I'd say that it's only worth holding on to if you can reasonably expect to have some really good appreciation in the near future (like 5 yrs)....Or, in the case where it would run well as a vacation rental, you could switch the usage, maybe?