What time is it there? Do you ever sleep?
The Octoprint can run off the 2 gig version of the Pi4 and I think the 4 gig Pi3 both are now becoming more common place. There is even an Octopi image so all you have to do is burn it to an SD card and you are good to go. There is some configuring to do, but for the most part it works out of the box.