Well done DShe, with all your preparations, and with the fact that your anxiety is reducing. I think you can't have enough knowledge and contingency planning in place so that when you go, you'll know exactly what to do.
If you don't want to confide in a friend, maybe someone at a DV helpline? I'm not sure if you've contacted any services in this area, but reading in your OP that there's a chance of violence, I hope you take that precaution.