Probably, the only question concerning should something be graded is; will I get back more on the money spent on grading than if I leave it raw? I am sure there are exceptions but that is really the general rule, unless you are trying to get less for your cards.
ps...I would guess closer to the lower end of Mike's guess above, of 300-500, for value. That is unless some master set collector needs it, then congratulations are in order for the seller!!