i could also go with a volume, 4-way rotary switch (1. both in series, 2. neck, 3. both in parallel, 4. bridge) and a two band eq system without drilling any holes in the control plate which also might be cool. i already have a few of the two-band pcb's that i could make for it.
the first thing i'm going to do, is just route the single SR pickup and play & listen to it like that, since i love how simple a standard single pickup ray is. if i decide to go the HH route, then i'll route it for the middle pickup and make another pickguard for it. BTW, the ray pickups weigh 5 oz, so they add more than a 1/4 lbs to the overall basss weight.