I play mainly Praise and worship, and rock worship
I suggest an Audere pre amp... reasons? It is a "drop in" piece, and the tone.. oh man... the tone!
Pups.. hmmm I never really liked Barts, but that's just me. You can find lots of great reviews in this thread here.... maybe it will help
"J" pickups discussion and comparisons.
and for the record, I use DiMarzio J's / audere pre in both my MIA fender J's. Mine are 4 string, but strung B-E-A-D.