Yep, I'm applying to St. Gallen as well, but I am going for the second deadline, as I do not sit for the GMAT for another two weeks.
Why did you choose St. Gallen? I started learning German 15 years ago in school, and I want to immerse myself and become fluent. (Outside of classes, obviously, since they are conducted in English.) The school fits the profile of what I want--close ties to top consulting firms, access to a strong economic region, beautiful setting, reputable program, etc.
Good luck with the GMAT! And keep me (us?) updated as your application comes along.
We've chosen the school for the same reasons: reputation within the German-speaking world, setting, desire to improve one's German. I'm fairly fluent but it's faded a bit since returning to the US. How I'll manage the Swiss German remains to be seen...