I have a few articles that show how alcohol can hinder muscle gains. Bro if you are going to do a cycle, I'm sure you can go those 8-10 weeks w/ out alcohol. If you can't then don't bother w/ a cycle, make the best of it, it can be a great thing. Off cycle is a different story. Others may disagree, you probably wouldn't notice any of your gains altered though.
Kull