Hey GA, awesome decision man. These next few days are going to be tough. First things first, dump everything. Flush it all down the toilet, smash the cans under your boot, take some rage out man! You don't do that shit anymore! I'm a senior in college, and smoked for a couple years and then dipped for another one.
Something to be careful about: many of us have had similar cancer scares, freaked out, promised to quit and then once we find out it's not cancer we go right back to it (because we're addicts and idiots, I guess). Don't do that. Take a minute to think of all the reasons you want to quit. Write it down, talk about it on here, go on KTC Chat, whatever you want. You'll realize that many of us are in the same boat.
I quit with you today, One Day At A Time.