I have to agree. At this point I think your best (and maybe only option) is to go ahead and file.
Did you ever get a chance to attend the informational class we learned about in Santa Monica? IIRC they had the seminar a few times a month for free!
I guess I was not aware your H has had multiple affairs over the years. IMO under the correct circumstances one can possibly be overcome and the M can be rebuilt but if I am understanding Gucci's post correctly he has been having affairs for over two decades! IMO that is a serial cheater and exposure will do no good.
Get educated (I know you are working on this) and find an attny you like and trust and file. Get yourself a good C and do what you must to protect yourself and your children.
He might come around and he might not but IMO there is nothing more for you to do.