Enlightened,
I really connect with you. I have no advice to offer at the moment only, empathy, and support! Its so overwhelming isnt it! Everything you need to consider, everything you want and need to know in order to make any decisions. I analize everything too. And like you I have a young child. He's 22 months.
. My H's affair started when he was about 8 months and continued for a year. So year I relate to the family issues and neglected obligations. Also the coming to bed at 3am. Are you sure your Husband dosent have a long lost twin? :-I