If you wish the OP well, STOP making these terrible suggestions.
When the OP is dealing with her husband and kids (and the mistress), she cannot afford to show any rancor. She CANNOT. Any hint of hostility, uncooperativeness, attempted parental alienation, etc is going to screw up her chances to stay in her children’s lives.
The OP’s (very understandable) outburst means that her husband can file emergency custody orders, restraining orders, and goodness knows what else. She needs a good lawyer, she needs friends and supportive family, she needs God to get her through this.
OP, I am so angry on your behalf, and I’m just an internet stranger! But when you are communicating with others, you MUST put aside your anger. Certainly don’t entertain any out of state moves, or seek to punish your husband.
I’m so sorry. This is dreadful.