Thats awesome! A whole new rabbit hole for you to dove down! 😁
Rpi are expensive now, and probably wouldn't be the hardware I would suggest if I was building my own today.
I would go for either something like a rockpro if you are set in a single board type thing, or preferably a small computer like:
https://droix.co.uk/product/gmk-nucbox/
Much more robust and stable than a pi and won't use that much more power. And these days not that much more expensive really either.