The maximum rent increase is 5% + local CPI capped at 10%.  

The property has a 6% cap rate and estimated value of $380,000.

NE, Centerwood Estate Center Point Alabama 35215What do i expect for cap rate in this particulate area and Center Point?

Especially since the difference between the cap rate and your interest rate is going to be small.  

Either way it will affect your DTI, the pro with owner finance is you're not capped on how many deals you can do.

Those two units bring in $1100 and $800 respectively and our expenses on the property come out to roughly $1700 including repairs, cap ex, and some vacancy.  

It would serve you better to ask for prior years Schedule E to get a good idea of what the past has done and you create your own pro forma based upon your numbers of what improvements, cap ex, and raise in rent could do for the property.

That's Cap Rate, not Cash-on-Cash.

Everything had previously been smooth sailing until I received a message Sunday night that a female tenant (let's call her tenant A) came banging on the door of another tenant cursing at the young family (Tenant B) claiming that she couldn't get in or out of the drive way.

Floor, cap, coi, etc.