I think it's great that you have a T that you already feel comfortable with to move forward with individual T. My T was originally our marriage counselor...and when I was struggling with my situation, he was the first person I contacted.
Moving from the "we" issues in marriage counseling to the individual issues can be scary. I am starting to delve into that now and it's not easy.
Good luck to you. I'm so glad you have someone! That's HUGE!