In the /e/ community forums, I found an Xperia XZ1 Compact thread with builds and linked instructions provided by one of the developers, so I took the plunge and installed /e/ very easily. I’m setting everything up now to my liking, and apart from some initial issues with keeping my LTE connection, everything now seems to be working great. (Not sure I like Bliss launcher, though. I may try a different one later.)
Thank you for the encouragement and inspiration. It’s nice to be free from Google’s tentacles on this device! It will do nicely until I can transition fully to the Librem 5 (pending voLTE, a world modem, better battery life, etc.)