I have a friend that I just taught amortization to as he is trying to quickly pay off his mother's FHA loan to remove a co-signer, then cash out refi (yes, I explained interest rates right now).

That benefits them but not you because tenants will not hesitate to break a lease if their circumstances change, while it makes it harder for you to remove them if they become a problem.

My goal is to pay off bills from the construction, remove my co-singer, and purchase another property out of NYC. - The loan is an FHA at 3.25% Please help before I do something stupid!!! 

You can get:-$10,000 per unit for mini-splits - $5,000 per unit for knob and tube removal - 75-100% off insulation- FREE light bulbs and light fixture- FREE thermostats- FREE Shower HeadsWe just got $20,000 for knob and tube removal at a 4 unit and $30,000 to replace this shared boiler at a 3 family we own.

If for some reason HUD called tomorrow to tell you that you were removed from the program, you would still have to pay the full amount.Tenant: "But, I don't pay that portion."

Couldn't pass the inspection until he ripped it all apart, removed 2 new kitchens and 2 new bathrooms, moved walls, etc. and made it a 2-family building.

How do I get these liens removed?

Deals with "hair" on them take time, strategy and a good amount of luck, but they do turn into gold mines. 

You could just assume the loan and remove it from their credit entirely. 

It would also be painful to move all my units to another platform that syndicates with Zillow, without removing the risk that Zillow may decide at any time to drop any given platform .