actually, i would even prefer them larger - i'm working on getting a .168" made for me, and i'm also going to get ahold of some 165"s that dean markley are making for a friend of mine.
as for "the pickups aren't made for those frequencies" that's a pile of ... stinky waste products right there.

any pickups should be able to transmit accurately down to DC. now whether your amp will handle it is a different story all together.