For a few months until recently, I was smoking weed twice a day and usually having one or two cigs in the morning or evening. I've got to tell you, It's loving bad for you. I've had a sinus infection/cough for over 4 months or since the beginning of summer. I just had to stop because I was afraid I was going to develop pneumonia.
Weed is extremely easy to quit, it's not addictive at all and I just quit cold turkey. Cigarettes are another story, some mornings I'll absolutely crave them and almost think about stealing them I need them so bad. Don't start smoking cigs. I get really nervous and panicky and jittery sometimes I want them so bad. Weed is worth it, do it.