i'd go for the 600s instead of the R1, dont matter of you just do track day, but if you want to get back on racing, the R1 might be a bit too much?(at least for me)
please also consider Triumph Daytona or street triple, they are right around your price point, and will be a bit more linear in power delivery, great handling also
and i would disagree with some of the comments here about Jap bike being "fall apart", they are anything but that, Italian bike are much more prone to "fall apart" than Jap bike, and that is a fact
i totally see where you come from when you want to track another bike other than the 1299, it is a beast on the track, and that's good and bad, i have so much fun with it, but it is difficult to learn to ride faster on it.
i myself picking up a smaller bike for the track too, still gonna bring the Pani to the track, but both bike will be there, one for fun, and one for learning how to ride better