Congrats on your acceptance! As a current student at UVA, my experiences in the CS department have been great thus far. The courses are tough, but you’ll learn a lot. Professors are mostly very kind and approachable. I don’t think ranking is a huge concern since job placement is excellent–I know fourth year students going on to jobs at places like Palantir and Microsoft next year. Your concerns are valid though–the program has gotten much larger in recent years, and it’s unclear how they’re planning to handle it.
Overall, you’ll probably get a great CS education wherever you go and you should make your decision based on where you’ll be happiest. Shameless plug: I don’t know anyone here who doesn’t like it! Go hoos!