Good for you. Be sure to keep some higher nicotine ejuice around, at least 24mg for any big cig cravings you may have in the next few weeks and consider getting a back up, and maybe even a backup for your backup. Slip-ups occur mainly because nicotine mg count isn't high enough, or we miss the convenience of our nicotine delivery because of device malfunction/don't understand how to properly use our device. Also realize that tobacco has natural MAOIs which act like an antidepressant, and some of us find it a little more difficult to let go of cigarettes because of this. There may very well be a little bit of a "withdrawal" period, so be ready, but not even close to as bad as cold turkey. And stay hydrated as you begin vaping, it can dry you out in the beginning.
Triggers can hit you out of nowhere until you get out of that past ritual, but as long as you vape some higher mg juice that will surely pass almost instantly. My triggers were always after I finished doing a hard project, or I suddenly found myself with nothing to do, I'd occasionally get the sudden urge to go outside to my old smoking spot and then a stronger urge would come to get a quick fix of a cigarette. My legs would honestly just start taking me there automatically before i realized where i was going lol was pretty funny. Once I upped my nicotine mg count I no longer had that issue, and now i'm down from chain-vaping 36/24mg all the way down to around 8mg nowadays, in as little as 3 months (when I finally found out about RDAs and found the equipment that works for me). (Was a 1 1/2 pack a day marb red smoker for 11 years)
So have fun! Wish you luck and remember if it doesn't work out, for you or your hubby, there are so many options out there to get a much greater vape for cheap, but your current model may very well be a viable option (just research pricing. it looks like a the Vapor Shark is like an Ego with a protank, or vivi nova type set up from what i see) make sure to look around and make sure you're not being overcharged and eventually build your own coils! You'll save tons of money, it's super easy.
A youtuber that helped me out a lot in the past was Pbusardo. Cool guy, runs a nice youtube channel and website
TasteYourJuice.com
For juice I enjoy Forest Fruit from deejstuff right now, but that's just a flavourart flavor so i'm sure it's all over the place. It tastes like crunchberries cereal to me

really good.
And Tasty Vapor is a trusted vendor by many so i'll second that one.
Pm me anytime if you have any questions about anything, and we're all here for you.