Hi Landon,
but keeping it up to date is not easy. Plus, I don't really know how to keep it up to date like that.
You check for a tor update every month or three, download the latest archive, compile and install that and as soon as you restart tor, it'll be up to date.
It being a package in a package manager is of course much more convenient - I've noticed tor is always kept reasonably up to date in Gentoo-libre myself.
I highly recommend that everyone get one because it is inexpensive, is a badass little computer and is a fun toy!!
My personal recommendation is to never purchase a RPi unless it is supported by libre-rpi, as unless you are running libre-rpi, RPi's follow broadcom's orders before yours, considering that they're controlled by proprietary software running on the VPU.
A real computer that can be GNUbooted and doesn't restrict you from doing anything you want (via refusal to provide the source code under a free license) is a much funner toy to me.