1. If H files first, can you have the venue changed to be local for you as it would cause a "hardship" for you having to be there for your minor child.
2. If you file first, can you drag it out or even stop it?
3. Regarding OW, my attorney told me that I needed "proof" of OW. Even though H has admitted to everyone he's told that he has OW and is living with her when her kids aren't there. So, I had to hire a P.I. to obtain "proof" of the A. Also, this will help me get some sort of alimony (since I make more than $20K) which won't be much or last for long since I don't have "need".
4. Also, have your papers include the phrase "lifestyle that they have been accustomed to" if H is the major bread winner.
Even if DBing doesn't save this marriage, it can help you become an even better person and the tools that you will learn will help you with future relationships and even the relationship you will need to maintain with H for the sake of the boys.
Go to a quiet place within yourself and ask God to guide you. God will never give you more than you can handle. However, we must learn to ask him for help. I know as an independent woman that asking others for help is hard. However, God is always there for us day and night.