If you're interested in (co-)moderating any of the communities created by me, you're welcome to message me.
I also have the account @Novocirab@jlai.lu. Furthermore, I operate the bot account @daswetter@feddit.org, which posts in !daswetter@feddit.org.
What hardware do you currently use and what software do you intend to run on the new machine? And what's your budget situation?
In any case, I would always recommend to buy used or refurbished hardware. Even if it's not necessary financially, it's better for the environment.