I would say keep it, with the amount of time and money it takes to complete a difficult set like this, no one will offer you enough for the set or singles to make it worth moving it.
That would look sweet matted up, my father in law cut a matting for my 1984 Detroit Tigers autograph set of 36 cards. Looks awesome framed and matted. When you complete get the set completed it will look great framed and matted.