to wrap or not to wrap.

so i finished the story, and then i thought, do i need to have a conclusion? so i wrote one (maybe 10pgs, not long) and now i'm not sure if i want it at the end of book 2 to wind things down from the big ending scenes, or if i should put it at the beginning of book 3 to start things out and link it to book 2, or if i should just toss it and let the ending be unsatisfying. hmmm. decisions, decisions.