So we tithed what we knew was coming every month as a fixed base. 

Pay the bill yourself, then reimburse yourself by charging the tenants based on a formula.

I would buy a place all cash if was an option but the best part of the refinance is that you can use the current equity and the potential new rental income to purchase.I can't cash out refinance right now.One of my properties doesn't have enough equity; I'm probably at 19%-21% LTV - 15% down house hack.The other property has probably $80-90k I could tap into, but I have a 2.9% loan, and I won't even break even with the new interest rate.You have a great rate so it's probably hard to beat that but based on what I am seeing in the market rates won't go down to that for a very long time (if ever again).

Then it could be quite different and just make the gate motorize, move in base and rent to trucks ( yes i get way over simplified), going to look for more resources on that possible route as the required capital would be drastically less for possibly a better ROI. 

I will make Z in mortgage payments every month based on this amortization schedule.

Saw you were based out of Indiana.. are you thinking about investing in that market or open to other areas as well?

Based upon the details you have, there could be potential questions from an UW on the purchase of the quadplex as to why you would be making the change from the current primary to the quadplex and from the brief information you've provided there are could be a lot of reasons why. 

A lot of investors based in markets like New Jersey are choosing to purchase their investments OOS in the Midwest because of the affordability and numbers making more sense.

For example, if you were rehabbing an old house with plaster walls, the insurer might spec them to be replaced with drywall and base their payout on that BUT the public adjuster digs into all those details and makes them payout based on plaster because that is what is there originally.

One thing I am hearing is I need to be Lead Based Paint certified, even if only the contractor does all the work.