BKP bridge strat pickups are very good, never harsh and thin like so many others!
However, P90s sound much fatter and stronger. Just by the different design and are a great inbetween compared to strats and humbuckers.
I'd partner a BKP90 (underwound) or BKP91 (standard P90) with the sultans, and go for the BKP92 (overwound) with the trilogies. The MQ would sit well with either I'd say. Plus you will be able to buy a scratchplate for the MQ! :)