One thing to watch out for when doing something like this is that the Raspberry Pi will by default put your file system on the SD card it boots from. SD cards aren't meant to support a lot of write/erase cycles, so it's easy to end up with a corrupt SD card after a few months to a year depending on what you're doing on your Pi. A workaround that can save you some headaches here is to only boot from the SD card (which…
I've been using a RasPi for a Pihole for years and this is a constant peeve. No matter how many precautions it takes, it eventually dives. RasPi is neat for a lot of things but I'm not convinced it's an ideal selfhosting platform. By the time you invest in the necessary addons, you might as well have gotten a used actual server.
I have wasted alot of time and lost a not insignificant amount of external data.
I am about to buy a FreeNAS mini tower.