It's always encouraging to hear positive feedback from someone who personally knows the individual in question.Your point about the 3-day event vs.

BP, I’m looking at an 8-unit deal in the Northeast that was historically a non-profit co-op with tenants already in place at substantially below market rents.

Not all (self cert) architects though do multifamily residential so if you want to consider a few options you will have to reach out individually to find out the architect's practice areas.

Is the duplex owned by an entity or partnership of individuals or...?

Once the investor understands these three FOUNDATIONAL aspects of real estate investing, they can comprehend the creative and wealth building techniques and strategies and successfully apply them to individual deals.  

Owner said they made substantial repairs including new wiring, new electrical panel, all new insultation and repair of any charred areas. 

I've reached out to a few individuals on here to introduce myself but am 100% open to recommendations for investors too. 

HI Shivani,Each individual property would be calculated separately based on when you purchased it (tax returns or lease agreements used either or or both in some cases) which the lender would subtract from the monthly PITI or mortgage obligation/taxes/insurance/assessments/etc.All the rentals whether positive or negative would then be added up into one number (net net).

You should be consulting with your CPA ot tax preparer to account for the specifics of your individual tax situation. 

You see individuals who buy and sell properties but do none of the work and do not manage the properties; use the word turnkey.