Congratulations! I have a Rottweiler as well, he's my second one. I showed him in some conformation shows around here in Minnesota until he was 18 months, we never won anything (I am very inexperienced) but we sure had fun. We are now back in the obedience ring after a hiatus of a couple of years ( I had twins 2 years ago).
Are you going to Nationals in May? A friend of mine and I will be driving down for a couple of days.