I asked my CPA to sit down and go over the math and the pros and cons for my specific situation and portfolio.

Remember, everyone else’ is either not bidding or bidding less because of this situation, this is a plus to you, not a negative. 

CPA would be able to answer best per your personal financial scenario 

The value of the trailer is so low and the title is lost that no one wants to deal with it, everyone is worried how much it will take to demolish and remove.My background plays a role in my situation, I've been in construction for twenty years and know I can fix this house for little cost (5-7K). 

I hope this helps get your situation on the right track and gets the conversation going with your accountant.

While my situation is relatively straightforward with a W-2 job and 5 rental properties, I feel I'm not receiving the proactive planning and guidance I seek.

If they are a crime victim they should also go to their local police department's financial crimes unit, contact financial crimes where the fraud is based and call or go into their local FBI office and ask to speak to the duty agent. 

The individual owner of a seller financed mortgage enjoys a notable advantage over a traditional financial institutions, direct one on one negotiation capability with the borrower. its an advantage for negotiating new terms, adjusting interest rates, and addressing unforeseen issues.We have heard that this is a way for the owner to avoid "Capital gains"?

I found myself in an ironic situation of always aspiring to be a guy that gets into REI with the goal of creating quality.

As for seller's NOI, I would certainly ask for their financials, but at the end of the day, they will only provide you about 30-50% of the picture.