Knossos

You are probably better off using something like Tailscale. You don’t need to expose your system with a reverse proxy then.

I’ve heard good things about this:

http://jetkvm.com/products

What waste industrial grade SD cards? I have moved to a non-pi server die to constant SD card deaths. If I can get a stable SD card I might set up a pi hole again.

Will it survive winter months?

Do you research of raspberry pis, they are really great. You do need to be careful though, sdcards die comparatively fast, and you don’t want anything important to be on it when it does. Or at least backed up (Borg is cool).