I had a bass (passive) with the NP5 in it and it was anything but dark and muddy. To each his own, I guess!
Maybe you can get someone to sell you 1/2 a 5 string set for the long pickup and 1/2 a 4 string set for the shorter one? Maybe try the folks at
Hanson Pickups? They make 4 and 5 string sets in a couple of different flavors, including a Neo Punch. Top notch guys to deal with as well...