Congratulations on your 92 days of sobriety. That is a big accomplishment. It is also a big change in your life. When people make a big change, like sobriety, it is important to keep other major life changes to a minimum. The conventional wisdom in the recovery field is to not make any major life decisions for a year. You and your boyfriend have been together for 10 years, so it isn't like you just met someone at AA a couple of months ago and are thinking of getting married.
I would encourage you to take your time. A person goes through a lot of changes their first year of sobriety. That doesn't mean you shouldn't accept his proposal, it just means take your time to plan a wedding.
You need the time and energy to focus on you and your recovery. Don't let getting married get in the way of that. Sobriety first, slowly plan a marriage. In addition, I hope your boyfriend is going to Alanon. It will greatly help him understand what you are going through and will strengthen your relationship.
Thank you. I think in my heart I knew I should wait. I have been having difficulties with his daughter who is in late 30s and really not looking forward to any confrontations with her. I will not make any major decisions for the time being, like moving down to live with him permanently as this would alos limit the number of AA meetings I could attend.