I didn't a have "coming out" about sobriety. I relapsed when I did it for others and when I thought I had alcoholism beat.
Each person has their own way of recovery. I got sober alone and turned to SR/counseling for support but getting sober for me allowed me to really look at my life as a whole and make many changes which I am still making in my early sobriety.
I think you are thinking way ahead and a suggestion would be to focus on the here and now. Take it one day at a time and start making changes as to how you deal with the ups/downs, triggers, lifestyle. etc.
Don't stress on who to tell. Trust your gut. If you feel telling those that matter to you then go for it.
Way I see it.....no one will keep you sober but you.
Stay strong and keep posting. All the best!