I inherited my father's home and am entertaining someone who has cash offer for the house.

A person with a reasonable full time job is typically a more responsible adult and has to act in a professional manner for their job. 

*I had someone apply for my rental but there were two fraud alerts that popped up on one adult, 2 collections and 4 late payments on the other though the credit score is 725.

Just wanted to add that your plan sounds great, but the state is not entertaining counter offers at the moment.

Also, I think people "Entertain!"

If you can do the full, then you can sleep adults if needed.Make sure whatever bunk bed you get it is certified for adults.

I have several rentals occupied by 2-4 adults of the same sex.

I waited till 29 when I knew my whole adult life it was something I wanted to do but always thought I needed more money saved or that I couldn’t afford it when realistically I could’ve done it several years prior at a much lower price and interest rate as well.

Affordable living, great economy, fantastic sports teams and entertainment. 

Paying rent on time does not suffice as a strong reference.Credit score: this is hard because virtually always it is a multi adult tenant.