That's a good idea, I might see if I can do it. It was registered with Google Domains but got transferred over to Squarespace, idk if they offer long-term renewals.
Also, just checked on Squarespace and I am able to add up to 9 more years of owning the premium domain at the moment. Squarespace seems like a stable enough company to trust for 9 years - but then I worry that I would become complacent, forget about it, and then let it lapse. 9 years is a LONG time!
You probably shouldn't use a premium domain unless you really need one. It's just a money grab by registrars and registries.