If you're worried already about craving a drink...I'd wait! I had told myself I'd quit cigs at around a year sober,but here I am at around 19mo and say everyday "I need to quit smoking" and I do want to..it's just my last vice and I "need it?"
I quit for a few months some years ago and the first 3days,similar to booze,were the hardest..then I had the "just one" while drinking and here I am 4yrs'ish later still smoking.
But..even in my drinking days if I had to pick one..I would have picked cigs over booze. I smoked before I started drinking and I'm loyal?