>I will call Becky but I'd really like to have a better idea of what pickups can work well together before I do that.

I subsequently re-read that and realised it doesn't make sense. So I called Becky and she recommended:

L-600 1.6 neck
L-600 2.4 middle
L-609 4.8 bridge

(which sounds like a very interesting combination to me), and no Q-filter since it wouldn't go so well with these pickups.