Amy,
As has been pointed out above, make it today. Tell your husband that you and he are quit right now, and dump out any existing cans. As far as alternatives Smokey Mountain is available at Casey's General Stores as well as WalMart among other retailers. You may also find that Lifesavers mints, Redhots, Hot Tamales, Cinnamon discs and sunflower seeds are a great alternative. Also, drink lots of water, if you can pass a restroom without the urge to cross your legs and feel as though you are about to piss on everything then you are not drinking enough water. This may sound fucked up but it does work, I myself didn't use fake until about week 2 or so.
Also, postponing your quit date can often cause a "planned" cave date. No ways out, no retreat,; just do it now. The first week is the worst, so why louse up a weekend with making that part of it?
I quit with you and I urge you and your husband to dump your cans in the toilet, piss on them then flush...it is quite liberating.
Pinched