Hi amm
Sorry, don't know the answer to your query but I am sure a knowledgeable person will pop along soon. Good luck giving up smoking - I gave up a 20 plus habit in the first week of August 2008 and haven't slipped up since. I had been a serious smoker since 1987.
It really has been a positive move, I no longer get so breathless walking uphill or just walking distances in general. I used to hate smelling of nicotine so soon after stepping out of the shower and applying perfume. And I was able to change the terms of my mortgage thanks to saving well over £150 a month.
I turned to food 'for comfort' as I was not on a diet at the time. Combining giving up smoking and doing CD sounds like a good idea, although you will have to judge if it is too much to do at one time. You sound very determined - perhaps if you can't have nicotine replacement you could try hypnosis, worked for me and my uncle who had smoked about 35 years.