If you are able to run your hand between the top of the wall's frame and the truss (if it is this style) then it is not load bearing.

For example in 2001, as the events of September 11th happened and the world stood still, I was completing a home I had been building for the previous 15 months.Just as the air traffic was frozen, so was the real estate market and, as a result, I couldn’t sell my primary residence which would have enabled us to have the needed down payment to purchase our new home.

If you need more headroom or the illusion of it and are good with a little more work, I would tear out the fails ceiling and use a paint sprayer to paint the floor trusses, ducts, plumbing, and wiring dark gray or white which is what I did in my personal home which only has 7’ ceilings in the basement.

But, if I were to look at my house and the dirty roof really stood out, I'd consider it. 

I went home and called my insurance rep and figured out where I stood as a landlord trying to help out my tenants.

So I offer only my observations and opinions, but I wanted to contribute a little bit to the thought process tempered with 21 years of my wife having to deal with me ;- )For starters, you asking the question would seem that you really just need some validation for what you think you should do, and there is plenty of support for that position above, so I won't go very deep into, but the statement that actually stood out to me was the "He’s the type of person that hates his job and does nothing about it.

But he did say something that stood out to me.

My brother is in Kona on the big island and was looking at stuff...there were a couple possible options (mostly for short-term rentals) but nothing really stood out.Glad to have you!

The numbers didn’t work for me to offer any higher so I stood firm on my original offer.

Built a new construction contemporary home which stood out from all the others in the neighborhood.