Nice! I always run nodes on refurbished PCs (mostly from closed offices). Are very powerful for a node. WAY BETTER THAN A RPI.

And now you can run raspiblitz image on those https://github.com/openoms/raspiblitz/tree/amd64/alternative.platforms#amd64-image Just install DebianOS on a small disk, run the 1 line raspiblitz script, sync and done.

I would not run anymore Umbrel.