The combination of P90 neck/HB bridge is a very good one indeed. May I suggest a lighter wound P90 at the neck - to retain some sparkle. This last P90 I've got is a 10k+ wind (from Gibson!) and its a bit much for the neck. Something in the order of 7.5 to about 8k (max) I think would be idea. HINT: Fralin!!!
The BFG I did, and Vics BFT are both in the 8.3k range, and are reasonably bright at the neck. They're hollow bodies, mahogany necks. Keep in mind - a solid body and maple neck will brighten things up considerably. The hollow MWT I did for myself with goncalo neck has got that 10kish P90, and I'd not mind reducing that down quite a bit.
P90's like to be rather close to the strings for good brightness. If you back them away, you lose volume - and you lose sparkle. What this means is an overly hot P90 (less bright to begin with) will need to be set close to the strings. Since P90's are LOUD pickups, and since its at the neck (louder yet), you'll need a real rippin' HB at the bridge to keep up with it. I've used Burstbucker Pro #2 and Burstbucker #3 with good success (the latter is a bit darker.. just a bit).
Just some thoughts "from the field".