Tip: don't plan where you're going to college based on cheer. Look at academic programs that go with what you might want to do in life, and look at every other factor such as residential life, cost of tuition, etc. If you find a college you like based on all that, then check out their cheer program and see if it fits what you're interested in.
I don't know where you stand academically, so don't think I'm putting you down, but here's an example of where I'm coming from: I had a friend that was planning on going to a local community college to get an associates degree and become a medical technician or something. She had a reasonable, achievable plan for her life. Then she realized she had the chance to make a team at a bigger, tier one university, so she changed around her entire life plan to cheer there. She made the team, had one fun year majoring in something she didn't care about just so she could cheer, and after her second semester her grades were so bad (bc she hated what she was doing) she had to quit cheer and eventually drop out of college. She now works full time at Forever 21 (which is respectable, until she can figure out her next move). I say all that to say, just don't go to a college just to cheer there. What if you end up hating it or it isn't the right fit for you? You can't major in cheer, and chances are your future employer isn't going to care where you cheered.
As for UK and Louisville specifically, don't think I'm being discouraging when I say they have the best cheerleaders in the country, possibly the world. Most of them have been cheering their entire lives and have had elite level 5/6 skills for years. If I were in your position, I'd work as hard as I could to become the best I could be, and then see what my options were when the time came. To be honest, any college team is going to work insanely hard and challenge you as an athlete. Don't set your standards too high and miss out on something awesome just because it's not "number 1"!
