I would develop an escape plan which may involve finding a great deal if you can fire sale if needed.I am not going to comment on the cities you mentioned but they are very different in size and opportunity. 

I am not familiar with NH but it appears that the developers are rezoning it themselves and then building.

Flipping and wholesaling are not the easiest startegies for starting out - both are active jobs (as opposed to an investment) and require a combination of different skills that need to be developed and take a long time to master.

My question is: What is the best way to find an investor/developer/buyer to purchase this property.

Do you use the extra cashflow ($2000) to payback the principal balance, or to maximize the benefit of leverage you only pay back interest only for the first 10 years?

So what’s the technique used for discovering there’s a secret extra tenant living there?

He brings a tremendous amount of knowledge in creating and developing relationships, underwriting deals, and creative ways to finance deals. 

Those you listed will definitely be in the consideration set for buyers looking at our area but they’re not apples to apples comps, given they’re mostly newer construction and in HOA developments vs ours being a standalone single family with longer history.

But if it's still possible, staying with a smaller mortgage payment while sinking the difference and any extra into student loans would probably accelerate your goals.

Lots of appreciation potential, new development & properties, new metro connecting from Washington DC.