If your hubby was the COBOE and he used adultery to get out of his previous marriage it's going to be a VERY long time.
Here's a line we were told at Elder's School about 5 years ago:
"The degree of discipline should be commensurate with the degree of deviation."
That's a verbatim quote because they repeated it over and over from one school to the next and at subsequent CO visits.
Your husband has absolutely no wiggle room for "Oh, I didn't fully realize the seriousness..... blah, blah."
I completely concur with OTWO on child baptism. It is completely irrevocable. Why should a minor be allowed to make a decision like that?
Take your time. Don't let the kids get baptized just yet. Educate yourselves about your religion from outside sources.
WANTING something to be true, doesn't make it true.
om