Hey there Paladin, good to see another Tokai user coming over... ;)
All my BKP's are 4 conductor wiring, and it is a non-cost option. I'd always recommend going with 4 conductors, as you never know if or when you may want to use it.
If you're after a warmer pickup than the standard PAF type, you can't go wrong with any of the "Vintage Hot" range IMO, they're definitely a fave of mine, and really suit the Love Rock.