The few searches I've done suggest that is a pretty sweet deal. Nice! If you keep it unmodified, it might be cool to display it with some or all of the additional parts of the prop Fett blaster, but leave them all in their original state. Sort of like one of those expanded-view parts diagrams. That's almost more interesting to me than the completed prop. I know I enjoy having my graflex on my desk with the original flash reflector still on it. People sort of recognize it at first, and then I get to tell a more interesting story than just "yep, that's a lightsaber."
edit: Not that an accurate, completed graflex saber isn't interesting, but it's so iconic and so embedded in their childhoods, people can't really wrap their heads around it originally being something else unless they hold it in their hands.