@Rob. S. You might end up relatively content. A Unihertz ROM maker talked me out of the Slim, to the Pocket instead, based on the kb. Since @EskeRahn owns both, he might weigh in on the kbs vs screen size, but I'm sold on the Pocket, despite a 3.1" screen and an aging Android 11.
I've played with the idea of going custom Lineage, but prolly won't actually do it. The Pocket is now my daily and the few phone calls I get, I can't afford to miss, so I'll stick with stock, which has yet to fail me.