Most docs won't give HRT to a smoker.   You will likely need to quit ASAP.   OK, I know, quitting smoking is so easy that I've done it dozens of times.
Gum- fail
Patch- fail
Ecig- fail
Taper off until one a day and quit- fail
Cold turkey for the win!   I also did a few other things- I stopped doing the things that made me smoke out of habit.   I stopped drinking, stopped eating crap, walked every day and played a lot of guitar.  When I really thought I needed one, I'd take a hot shower instead.  Needless to say, I was wet a lot the first month.  I rewarded myself after dinner each day with hot tea and a small sugar-free dessert, like pudding or a cookie.  I avoided gaining weight by doing this; in fact I blew my doctor's mind by actually losing weight in the process of quitting smoking.
Anyway, it's best to quit closer to now than later, and I love smelling like perfume instead of an ashtray.
Hugs,
Jill