FS..... Caught up on your sitch....the first bit you or any of us go through is not called the roller coaster for nothing. Your changes will eventually become second nature and you won't find yourself always falling back into the communication and control patterns that got your R to this point.
Secondly, your husband left, so I would advise you not to leave the house. His choice was to leave, that is his choice. It is also sound legal advice plus you are right, this Easter is amazing at this age.
I would invite H over for Easter morning, if he would like. How would you go about declining his request?