That's missing the forest for the trees, but you do need to manage cash flow because if you're buying conventional you'll come across DTI issues soon and if you're buying nonQM it needs to be 1:1 ratio at minimum to be qualified without unfavorable terms. 

Conventional loans jumped to 12 months seasoning about a year ago.

You can househack non-conventionally, but that's by renting the room out and the better way.

Conventional or DSCR?

@Mike Klarman have you had issues with getting a conventional loan under an LLC?

You are correct, that this has long been the conventional figure used to estimate cost for buildable sf in NYC. 

It’s given me the opportunity to save and prepare for my next upcoming purchase.I’ve gotten the units from $750x2 and $800x2 to a consistent $900. current mortgage is $2500 monthly, refinancing to a conventional and removing mortgage insurance should bring me to $2100. 

I've seen you post a few times about 70% max leverage but 75% is widely available, at lease with non-conventional 30Y DSCR loans.  

Doing a conventional loan for each property is out of the question due to my debt-to-income ratio. 

This is based off of the conventional loan limit where you are buying.