God almighty. Opiate and benzo withdrawal together cannot be fun. I guess it will depend on your habit on how bad things will be. You xanax dose isnt that high, so maybe it wont be too bad, but I never went through benzo WD so Im not too sure, but Ive heard many say its worse than Opiate WD which makes it very scary to me. I dont know your opiate habit, but it can be hell, plain and simple, you may not want to live anymore, thats how bad it is, but every daily user probably goes through it at least once and sometimes many more times before learning their lesson. Ive only gone through very short withdrawal, 24-36 hours, but on a huge opiate tolerance, and it was brutal. Dry heaving, muscles aching like I never experienced before and just the most uncomfortable a human can probably feel.
I always say nobody should ever have to go through severe withdrawal, I really wished there was something you could come up with to avoid it.