I just don't want to come off as totally unreasonable and that the first leak could partially be paid by me.  

that is totally unrealistic return.. your going to blow your 15k and be very dissappointed why would they give you 50k profit deals just to sell you a 15k course.. ??? 

New York City though, seems like a a total dump with no redeeming qualities.

When house hacking a duplex, start by estimating the total monthly rent you can earn from the unit you’ll rent out.

Research comps in the Milwaukee area or connect with a local appraiser to estimate your property’s potential value.Depending on the rental income, you might explore DSCR loans for your refinance, as they rely on property performance more than personal income.

Now I am totally confused!  

They don't rely on ONE supplier, ONE broker, ONE anything.  

I just looked at a utility bill with a total charge of $184.12 but $116.50 is from base fees!

can totally enhance a working relationship. 

Use a payment processor to pay the original note and any wrap if there is a 2nd position secondary note that pays the seller the difference between their current mortgage and the total sale value.