I think once a smoker develops the habit where you start 'jonesing' for a smoke, it'll be hard to not feel like lighting one up especially when you drink and are so use to smoking while drinking. It's more psychological than anything I think and while you're physically dependent on it as well to a certain extent, your mind just wants that urge satisfied. I suggest not drinking for at least 3 months. Then, when you do drink, if you do, don't get drunk. Your mind will be more impaired and your judgment will be worse than if you just had 1 or 2 drinks.

Anyhow, hope it works out for you.