If you give up, not cut down on tobacco, you will breathe better no matter what. You will cough less, you will not get winded and you will smell better. The problem is quitting. The problem is will power, etc. A percentage of folks lose their taste for tobacco after trying e-smoking. Luckily I am one of these. If that turns out to be you also you will forget about tobacco pretty quickly and completely and you won't need will power to use something that is better and tastier. The trick is, is this you? I don't know, it is not everyone, but if you are one of the lucky ones this problem will be solved. I wish you well, it may be easier than you think.
David