Congrats and welcome! You got started with a pretty good system. I did the same thing when I quit. I finished my pack, and moved on to vaping. I'll tell you, I was a pack a day type person, and my first two days I vaped like crazy, and you may as well. Remember its all a transistion at first. I have sinced tested myself with cigs and I couldnt stand it! Just stick with it, it will be well worth it.
BTW I feel your pain about welbutrin, the doc put me on that stuff too, and I literally felt like I was going insane while was on it and instantly angry. I quit the pills and went back to smoking.
Good luck!