Appears this may be targeted (Unlimited plan) but check your account to make sure. I was able to trade a Google Pixel 5 in for $800 credit (over 36mo device plan) and include a watch of choice up to $399.99 in value (includes Galaxy Watch 4, Watch5, Google Pixel Watch, Oribic Smart Wrist).
I know people will slam device payment plans but I've been a Verizon customer for 20+ yrs, so this is a no-brainer. More knowledgeable folks here may also be able to advise whether early payoffs are options.
Total price in cart for Pixel 7 Pro and Pixel Watch should be $131.78, inclusive of the $35 activation ("upgrade fee") and the sales tax on the phone (~$96.78). Remaining balance on Pixel 7 Pro is around $2.75/mo for the 36mo period.