@Miles Robinson I use American Family for my Single Family rentals.

Then type up a nice professional looking letter expressing your interest in purchasing said property and send it.

What I have considered doing with tenets that I would like to stay is to offer them a renewal bonus if they express that they’re leaving at the end of their lease.

Then get yourself a team including a broker and lender, express your game plan, and go for it!

I would definitely try to offer option 1 and try to help her find a new place that she can afford, hopefully one of your other properties.You are a neutral party in this and try to express that to them.

Yesterday, he expressed his hesitancy to put multiple offers out at the same time!

I have not given an official notice yet, just expressing the idea that I want to sell the property, and the tenant mentioned that he plan to leave once the property is on the market and that he received the 60-day notice.

Purchasing from a related party is not expressively forbidden. 

I was talking to her about an FHA loan and then she expressed to me that she knew of a mortgage lender that does 100% financing and it is classified as a conventional loan, the only requirement is that I'd need a minimum of a 640 credit score to qualify. 

All views expressed are my own and do not represent the opinions of any entity whatsoever.