Congrats. Having a sponsor is great and working the steps thoroughly can have a major impact on your life.
I'm just going to throw something out there for you to chew on. Your sponsor may get to know you very well. Including deep stuff from the past. You might consider how that could affect your work and work relationship. Also sponsors aren't immune from relapse. At the very least you might consider working your step 5 with clergy or a therapist. That way your work is not too intertwined should something go south.
Best wishes. You are on the right path.