Would definitely recommend. 

Does anyone have any suggestions or recommendations?

@David R Pustelnik recommend you first focus on raising the rent for the first time in 10 years.By the way, how much have your property taxes and home insurance gone up since this tenant moved in?

If a landlord plans to hold the property for a while, we always recommend an annual lease, ending to align with the summer leading lesson, or staggered with their other leases depending on the situation.  

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

- Are there other lenders you’d recommend for refinancing rental properties that might have a smoother process or better terms?

I would recommend starting with them to get grounded if you haven't already. 

Quote from @Adrian Clapp: I highly recommend you read "Am I being too subtle?"

@Raul Velazquez The 3 things I would recommend besides reading books/audio/sites are:1.

If you can find practice tests, that is my recommendation - that is what I did after taking the required time component and did not have any issues passing the test.