This forum is not only filled with oodles of information on the products, but doubles as a support forum, too. I used to burn through 1-2 packs of Newports a day for over thirty years. Despite a few huge cravings in the first two weeks, I am on day 30 without an analog. The e-cig was just an experiment, but it turned out to be a life changer.
You go cold turkey or wean yourself slowly off analogs. You have to want to change your lifestyle and be willing to break one habit for another. The e-cig is not a 'magic bullet' and probably only provides 40-50% of the analog experience. If you end up to be addicted to nicotine and/or have an oral fixation, this might work for you.
Once you start using your e-cig, you will better understand all the banter on this forum. E-cigs are high maintenance. If you plan to continue using your devices, immediately order two extra atomizers for each one. These things fail often. If an atomizer fails, and you have no extras, you will be smoking analogs again.
Batteries will last about two hours, particularly if you vape heavily (which you will in the beginning). Buy extras and keep them charged. If you are near a computer for any length of time during the day, buy USB-Pass-Throughs. These devices power your atomizer from a USB port, saving you from burning through so many batteries each day.
Buy at least 50ml of smoking juice for each of you. As heavy smokers, you are likely to go through 6-10 pre-filled cartridges a day. This will end up being pretty expensive. When a cartridge starts to dry out you get diminishing amounts of vapor. Use the juices to drip onto the absorbant material in the cartridge to keep it wet throughout the day. If hubby does not want to mess with his, you can rinse and refill his cartridges each evening so he has a fresh batch or the next day. Lots of flavors and strengths of juice are available. I recommend starting with extra high liquid of 24mg/ml or 36mg/ml of nicotine. You can always cut the strength with distilled water and glycerine.
Between starter kits, atomizers, batteries, pass-throughs, juices and cartridges, the initial start-up cost can be high. Just trying several brands of smoking juice will increase your start-up costs. At some point in the future, you may breakeven AND be living a healthier lifestyle. My goal in the next four weeks is to drop down to a lower nicotine juice and, eventually, to zero.