Furthermore, you need at least 14 days of rental income in each of those two tax reporting years. 

I lived in the attic instead of using the “livable” space so I could use rental income to pay for the mortgage.

He originally told me that he wanted $5k in passive income of just interest only.

It won’t affect your debt-to-income ratio and won’t affect credit score/history.

Had my eyes set on a NH for a little while now and wanted to see if anyone had any advice/insight on claiming a 2nd home / STR property in NH as your primary residence in order to take advantage of NH not having state income tax.

I'd speak with a lender about this, but they can probably use your rental income towards the next property or at least use it to help with your DTI ratio.

Even though we have a history of rental income at that property and a 2yr lease in place.

Because I have reduced my expenses to less than 500 a month, and enjoy a more frugal lifestyle as it is, I am content pooling all available income to real estate, in order to accelerate this process. 

If someone is making millions to tens of millions a year in income WHY are they going to spend 50 hours with a new person that knows nothing in the field for 10k?

For a SFH there typically needs to at least be some sort of equity and if not, then the debt to income needs to be strong.