You've done a wonderful thing for your baby. (ETA: And for yourself.)
This is a long-term habit you are dropping. Six and a half months out I still find myself looking for the ashtray when I walk into a room in my apartment. When I started (from 3 packs to 0 in 5 days), I frequently found myself reaching for a cigarette that wasn't there. It helped to say to myself "Oh, yeah. I don't do that any more" then deliberately reach for my PV.
It helps enormously that this is the only alternative to smoking that I know of that addresses the addiction to the oral fixation, what to do with your hand, etc. (except a hookah and I was never interested in carrying one of those around in my purse.) Everything else, from Acupuncture to Zyban, addresses the addiction to nicotine only.
A low res atomizer simulates 5 volt vaping on a stock (3.0 volts, more or less) or a 3.7 volt battery. If you want to vape at 5V but don't want to invest in a battery mod right now or you want to try it to find out if you like it, go ahead and order a couple. I've never had any interest in vaping at above 3.7V. (I like that my vapor is not very warm.)
An eGo uses 510s. I'd recommend trying 510 cartomizers. There's less fussing. They hold up to 1 ml of liquid so you can clean up and lock up all the nicotine less often. (Might as well get into good habits regarding handling nicotine
before the baby is old enough to get in trouble.) I like the ones with soft, rubber, removable ends. They're easier to fill and you can just pop a drip tip on.
Some of the more popular places to get them are:
cloudsofvapor.com
nhaler.com
ecigsupply.com
cigtechs.com
litecigusa.net
cigeasy.com
madvapes.com
More than half those suppliers have discount codes so make sure you check
Strell's master list or the supplier's forum on ECF before ordering.
Good luck and congratulations!