Congratulations on 100 days.
I would also recommend giving AA a try, and having a potential sponsor already lined up is a huge plus. When I was first trying to get sober I ended up going to AA (after years of resisting) and was glad I did. I met some great people and the fellowship of others was very helpful. I've been sober over a decade now and haven't gone to AA in years, but I would go back in a heartbeat if I felt like I was going to drink.