It's too bad that you had to reject graduate school because of financial reasons. That program could have kept you busy while sober while also offering your life purpose and meaning. Could taking out a loan be an option next time?
Also, even though you don't like the whole group therapy thing in AA, you don't have to share. I think the two biggest parts of AA are listening and working the steps with a sponsor. You may not have relapsed if you were working the steps and working on yourself.
And, yes, I think it would be a good idea to give up the computer and phone for the first year of sobriety while you work on yourself with the steps.
All the best!