Over the past few days I've been messing with my home server and trying different Linux distros.
I've gone from:
Ubuntu > Xubuntu > Arch (trying to set it up but realizing I'm not ready for it yet) > Xubuntu > Manjaro
So far, Manjaro XFCE has been to my liking. Fewer issues and things have been much easier to set up on that old machine. Just a shame the hardware is so old. P4 3.4GHz, 3GB RAM, and recently had to downgrade the PSU and graphics card (128MB card because the one before - a 512MB - had the fan go bad and make a lot of noise despite trying to fix it) in order to have a working, silent server PC once more.