I currently live Levittown and a house around the block from me is on the market for 1.5m.

Currently building a foundation into the lifestyle.

Currently house hacking and finishing the unit I occupy.

These were financial mistakes we made when we were younger, and unfortunately, they snowballed over time.We currently rent but own a rental property out of state that cash flows $600/month and has about $190,000 in equity.

It’s cash flowing as is with the current tenants.

What is both your current and proposed LTV%? 

Ask to speak with some of their current owners and current/former tenants.

That said, realistically, I don't think you can go below the 6% - 6.5% range.One question I would ask is if that 3% can be better spent somewhere else to de-risk your deal.

Any development work they've done on the property also becomes your property.If the property becomes yours, you could try to sell it back to them quickly and below market for a nice profit.

If you are doing it yourself with the current interest rate environment, like Bruce said, it'll be a functionality of how much you're leaving in the deal.