Sounds good to me, just keep in mind that there are always things we can do to solve quality issues and other problems my friend. Replacing an ISP may not be possible due to contracts but we can always supplement with low cost secondary / broadband services. Even LTE/LOS SAT has been able to bring substantial performance and stability enhancements when we leverage SD-WAN (type) devices to aggregate multiple connections to provide best path routing for critical traffic . Certainly changing or adding services in a contractual renewal phase is ideal but just don't think you are stuck if you truly need the help. If things are workable for now, waiting probably makes sense but if needs are urgent always a way to help (almost always I should say).
And Knoxville has many enterprise ISP options so while it is highly possible it's all AT&T or whoever you are using now, there may be others. Happy to just poke around and show you some fiber maps if you want to get some inside scoops. I know we have used AT&T, Zayo, Centurylink, Hudson Fiber, WOW! and others there, but of course all depends on exactly where you are and what service level/budget you have (coax vx. fiber for ex).
I'll be here if/when you need help