that's a lot of magnet pull!
also, three fat pickups like that means they'll be close to each other, which both minimizes the difference between one and the next, and allows the magnetic field of one to affect the tone of the next one.
i recommend going with 2 at most, and even then, the "neck" one might not sound so good (being designed for the "almost bridge" spot.)
Guitar Repair Gnome
Alpha Music, VA Beach