i quit just over a year ago for similar reasons. was regularly riding centuries and commuting 30+ almost every day and eating really well and hitting the gym a few times a week and still had prehypertensive blood pressure. so i could no longer pretend that i was an exception to the rule.
it was my third of fourth attempt to quit (after 10 years at a pack+ per day) but my first one where i had a specific motivator (my BP), and it was realyl fairly easy. havent cheated, the cravings werent that bad, didnt gain any weight and my BP is much closer to where it should be for someone as active as i am, and i'm considerably faster on the bike (and i can actually trail run now too, which i never could when i smoked).
i dunno how attached you are to the drink, but i also quit booze when i quit smoking, i wasnt a problem drinker or anything, but i didnt trust my drunk self not to trick me into have a a smoke at a bar, so i just decided to avoid that stimulus for a while and now i just dont really miss alcohol.
good luck. i'm sure you'll do great, now that you have a specific, measureable goal and an irrefutable connection between your behavior and your condition.
please keep us posted. i found that having my old board (a music oriented board) to vent to (instead of my GF and family) was really useful...