Should I lower the price to my absolute bottom line now and try to undercut all the current listings?

Are you really working for the owner of the house or your bottom line?

The bottom line is that most agents suck because crappy but slick wins in the marketplace.

The additional income would add more to your bottom line, while increasing the value of the property via The Income Approach.In all seriousness... you'd have her sign a new lease when hers is up limiting the number of pets.

The bottom line is, do they meet your rental criteria? 

I have two inherited, elderly tenants who complained that their toilet was leaking around the bottom of it.

People calling around everyone to see what sticks go to the bottom of the pile if I have nothing going on which I stay very busy.Fine if people want to stick with that approach but it is not part of my business model.  

You will definitely be starting on the bottom.

I understand the process of owner financing and the things leading up to presenting the offers I guess bottom line is the confidence of knowing what you are offering is ethical and fair knowing that this I am doing my part to make a no deal into a deal where the seller did not want to accept cash. 

The time to think is way before you sign on the bottom line not after you have already bought the property and the debt and commitment are yours to keep.