I am interested in purchasing the property and was wondering my best course of action at this time.

I found an apartment for sale with an assumable loan. The loans has 35 years left with a really good rate. My question is how do I work out a deal with the owner so that I pay him back over time the equity? I don’t ha...

Get you money ASAP, period.Prepay your expenses in December.

Evicting them, even after purchase, could be a lengthy and costly legal process.

I would suggest leasing a commercial space for your business first before you go straight to purchasing a space.

On a Fix and Flip Loan, Max LTC is 90%, 100%Rehab, 90% Property Purchase on Value. 

Quote from @Ed Hoffman: Are there any issues/problems If I want to purchase a rental property in Pennsylvania with my New York York LLC? 

An attorney is the next step to get this guy out asap.  

Tenants will push and try to get everything they can from their landlord.Seems you've done everything possible to be reasonable, yet the tenant is not satisified and wants more.As already stated, you are too much of a pushover, so the tenant is seeing how much farther they can push you.Highly advise you to find an experienced residential landlord-tenant attorney ASAP.

NY is a very tough state to evict, so, you are better off coxing the BF out ASAP.