The US Department of Veterans Affairs (VA) on Tuesday issued a temporary fix that allow homebuyers and investors using VA loans to pay for their real estate agent's commission - i.e., the buyer-broker fee. 

Market dependent, section 8 can pay more per month than a cash paying tenant.

As we sold the houses we would pay on the side note and he would release the title one by one. 

My questions are:a) Is it worth paying that 15 year note off earlier with that interest rate?

How to increase the rent for this property with the section 8, and is that affect the tenant's portion of rent he is paying?

He is willing to pay six months in advance.

we had that property under 2 years and we pay a lot of mortgage. 

Many lenders also offer an Interest-Only HELOC, with which you pay interest only — no principal — during the draw period (Usually 10 years).

But as the previous owners didn’t pay their mortgage how likely are they to pay the rent? 

You were kind to offer extra pay for holidays.