Nodes are super light once they are fully synced.

I have a question, How long did it take to fully sync/replay, I would imagine it'd take an awful long time on such hardware, unless you managed to get it synced on more powerful hardware and then shift it over?

This would be great for me here in the UK since electric prices are pretty high.
But I can't really justify it myself since I've got a massive server at my house as it is, It's averaging 250-300W usage but it does also do more than just a hive witness node.
In fact it's got 2 Hive instances running + 8 other VMs. Which seems pretty good power wise considering.