I don’t think you have the ability to change these manually but if you hold an option you can click suggest less. There’s a way to disable it and it’s in this article: https://www.makeuseof.com/how-to-enable-or-disable-contact-suggestions-in-iphone-share-sheet/

The watch is an accessory that is used in place of the phone for tasks such as checking the time, asking Siri a quick thing, tracking workouts, reading notifications, etc all without taking the heavy phone out of the pocket and taking much focus. If you keep it for 3 years how much will it cost per month? It’s a value add that’s simply an extension of your phone

I’d say go 15, USB C for everything is nice and it’s not much more expensive, keep it working for many years and get your peripherals over time as necessary. No clue if there’s a Black Friday sale though, ask your closest store employee