I used to love the heavier Les Pauls, but as the bastard we call age creeps in and back problems pop up I find myself gravitating towards the 8-9 pound ones. 11 pounds is pretty heavy but if you don't think it would bother you go for it. I'd get a wide padded strap for it though.
Great score! I'd probably put a Bigsby back on it since to tops already been drilled. That's just me though, Enjoy it!
EDIT: Oops. Wrong thread on FB Marketplace find. Though there was one on a GT that had a Bigsby on it once.