I hope you enjoy traffic jams.
re: traveling with vapes & product: I feel it boils down to: "how much risk can you take?". It is not illegal to travel with clean paraphernalia. Discovery of paraphernalia, though, can cause a more serious inspection of your carry-on luggage, although not necessarily. The TSA's goal is to find bombs and stuff. They are not there to find drugs. If they do, they are supposed to turn you over to the Local Law Enforcement. They are not going to yell out at inspection: "Hold it - he's got a bong!!! Everybody down!!!"
As for bringing product, I believe the safest way of all is to mail it to yourself. With that said, my understanding is they seldom use dogs for domestic flights. If you check your luggage, TSA does not go through each and every bag. It does go though a few; I do not know their criteria. Even so, well-disguised product should make it through. Don't put it in fake sticks of dynamite.
I don't live in Seattle, but check out Craigslist: there are many ads for mmj, BHO, shatter, up to and including delivery services for it all.