Man, don't bankrupt yourself stocking up just yet, the sky is not falling.
IT WILL BE TWO YEARS FROM THE DATE THE FDA SAYS WE ARE SCREWED, TO US ACTUALLY BEING SCREWED! (Yes, the caps were needed).
That's assuming the worst. And if the worst occurs, they'll still need to actually enforce it (including funding for enforcement), which is another can of worms. Importing illegal/illicit stuff online is a thriving industry and Customs and the FDA barely put a dent in what makes it into the country, and that includes the seriously dangerous stuff. From recreational drugs to prescription meds to non-FCC radios to fireworks to, hell, pretty much everything the nanny state says you shouldn't have, people are getting, and getting easily and relatively inexpensively.
Mods are going to be the easiest to get of all. They can't check every piece of electronics that comes through, for one thing, so regulated boards will be bought with ease, and mech mods even easier (all they need is a 510 flashlight bulb connector, easy peasy).
Keep supporting legislation and advocacy, it would be best if vaping as we know it today remains legal, but don't panic, this is far from over, and even when it's over, it's not over...