Joint marriage counseling is not a good idea initially but seperate counseling would be entirely appropriate... a good counselor well versed in addiction when know when to suggest joint counseling.
As far as the steps I tell people who ask how fast they should do the steps that they should do the steps as fast as they want to get well and then keep doing them on a daily basis!
There is a great weekend retreat that does the steps in a weekend and there is an AA group that is called Back to Basics and they go through the steps in 6 weeks I think.
Then there are other groups that journal and take years!
Doing them quickly as the old timers did and then revisiting them, living them is the best way to live a recovered life in my opinion.