Well, guys, I did it. Bit the bullet and upgraded both lines. My wife's and mine. Got her a silver 128 GB 7 Plus and me a black 128 GB 7 Plus. We did the trade-in promo Verizon is offering. The $650 credit split over two years covers the monthly device payments minus about nine dollars a piece. I'll take it. We paid the activation/upgrade fees and taxes today.
We traded in our current phones (a Space Gray 64 GB 6 Plus and a gold 64 GB 6 Plus).
I lowered our data plan from 24 GB to 18 GB to offset the device payments being added to our bill (we were on a standard contract with the 6 Pluses). But Verizon gave us 2 GB bonus data each, so we're back up to 20 GB anyway.
Congrats on your purchases!