@Ian Palmer Congrats on your future acquisition first and foremost!
I have owned and operated an STR in South Lake (Meyers/Paradise) and had neighbors around as well. Fortunately they were wonderful neighbors and therefor I made it my personal mission to make sure I was doing what I could for them so that my rental was not bothering them.
Remember, they were their first, they live there, there kids are growing up there and they are the ones that should not be harassed by loud noises coming from the rentals. Obviously SLT has MAJOR issues going on with STRs right now because of so many owners/hosts not doing what they can to make sure they are renting to quality guests that are going to follow the rules or enforce any rules unless the county steps in...they simply wanted the revenue.
Before you spend too much time figuring out how to find the perfect neighbors (because I'm sorry to say it's likely impossible) I would focus on how you plan on operating your STR so that it creates and builds value for neighborhood and how you plan to make sure that it will not negatively impact their lives. If every host can or would do that more, then there wouldn't have been any reason for the STR restrictions to have occurred in the first place.
A few things I did along those lines were to personally reach out to each neighbor, introduce myself and my family. Let them know I was running a legal STR and planned to abide by all the rules of the county. I provided my phone number, email and a welcome invitation to contact me with any issues they had. I offered them discounted rates if they had friends and family in town and needed the extra space as well. I even had a mini-housewarming party and invited them all over to build that relationship. From that point on, my neighbors were my eyes and ears on the property, they informed me of guests violations sure, but they also informed me of the little things that friendly neighbors do, which I needed remotely managing, such as packages on steps, or fallen trees, etc. etc.
Anyway, sorry to drag on about this, I just think you might appreciate a different mindset going into this acquisition that might allow you to see more buying opportunities then obstacles.
Best of luck to you!