For example, if all the houses are selling for no more than 300k, even if your house is way bigger/more bedrooms, etc., you may not get a whole lot more than 300k.

In my area, law students and housing authorities send "actors" out to walk properties and fill out applications in order to see who violates these laws and they file hefty fines regularly.The benefit of defining your criteria is that it makes it really easy to decide who you rent to, no more comparing applicants. 

But like someone else said no more communication except “get out now” here’s some legal paperwork.

.- No more then 3 yr option term, ideally 2 yr max.  1 yr is optimistic and any shorter it must be "GURU" talk. 

Sewer pipes had to be replaced ($1500) but after that no more issues.

So, my apartment rent is currently $850 dollars which would mean my mortgage payment on the 2 - unit could be no more than $1,020?

One of our neighbors has a house that is supposed to sleep no more than four adults,  but twice this summer there were 18 to 20 kids in the house and it was booked through Airbnb.

Do you have to do to get to your ARV and get it rented quickly - no more or less than that.   

Assuming you're at 30 right now, the actual work should take no more than one to two hours a day.

Refinancing is costly and 3% rates are no more as you know.I put a HELOC on my house.