You are making a good decision.
If you want to talk to him about his alcoholism, and the hypocrisy you are feeling coming from him, be gentle- Remember to talk to your father in terms that he isn't threatened by, using "I feel like....." rather than "you always...." type of statements.
Your relationship is at stake here. If you can have an adult conversation, it bodes well for your relationship with him as an adult.
Moving out is certainly something you will be doing soon anyway, since you're getting to that age... but succeeding at getting along with your dad is an admirable goal in the meantime.
I wish you all the best for the surgery being a success.
When it comes time to start smoking again, there ARE some strain lines that carry anti-inflammatory properties. I believe that the foundation stock for Subcool's stuff is in that category.