That way, I could do 20% down and borrow the rest for my grandmother's house.

We're getting antsy since we're bleeding money on the borrowed money we used to finance the project, paying utilities, insurance etc etc.My main question is, though, what our expectations of the seller agent should be.

Thats a tight margin especially after taxes and borrowing cost of you are using a lender. 

Your Dad could borrow on the property, but you can't. 

The properties have been listed for a bit, so was also thinking if i couldn't work that out, maybe get into the one for the right price, and then borrow against the equity for down payment on the others?

Borrowed money isn't taxed. 

@Lucas Ritter  I would research my local market to see how much places rent for, vacancy rates, cost of housing and how much you can borrow from the banks. 

Chris, I didn't want to draw the funds until I got a property under contract as to not accrue interest on the borrowed amount.

Unless you're willing to borrow money from some friends/family, hard money lender, etc. then your max purchase price is about $500k for this; unless you can find a property that's "self sufficient".

I have reached my max. allowance of 10 mortgages from regular banks.In order to get more properties, I need to payoff the smaller mortgage to get under 10 in order to borrow again.What are the options to get more than 10 mortgages (for BRRRR strategy)?