I hope someone with more experience posts. All I have to offer is my support. You are really doing great, especially given the difficulty of your sitch. I don't have any D experience, but personally I would just make sure to use your L and protect yourself.
M: 9 yrs T: 13 yrs H:34 Me:35, S4, D2, S 7 months Dday 11/12-PA & multiple PAs Dbing 12/12 S 1/13 7/13 H moved back in basement. 8/13 #3 born 10/13 still cheating 10/13 He moves across country, I file for D