Why install cups, avahi, and dbus if you'll never use them? That's three large packages, three user IDs, etc. etc. I'm advocating installing less useless code.
Building an OS is about choice. I am advocating you buy a bigger hardware. If you don't agree, then choose another OS or build you own -- it shouldn't be difficult to build you own ghostscript from ports with your favorite options. Oh wait, we even have a framework for it, it's called 'mystuff'.
If I read the code correctly, gs won't queue its output for printing (its default) unless cups and all of its dependencies are running.
