at some point we will need professional assistance and guidance.
not neccessarily.
I'm sure YOU may get benefit from it, since you are actively willing to pursue it. But I would suggest that you not push it on your wife as some kind of requirement, or even have expectations within yourself that you both "have to go" together.
Michelle's books seem to emphasize this point. She seems quite happy to counsel just one person out of a couple.
My current status: june 2006. Wife ran out and filed D. Finalized Jan 11, 2010, after 12.5 years M. 3 wonderful sons caught in the middle