Well. that little speaker cabinet is no slouch:
8 ohm
250 watt handling power
10 lbs
9″x9″x9″
4 Eminence alpha 3 speakers with special fluid-cooled, high-yield neodymium tweeter
It's also $700. That nice little amp is $900 ( All MSRP , of course ).
As far as the K&K pickups go, I think that Guild Contemporary I have, which passed through you hands, sound pretty good, when I plug it into a small amp I have that's for accoustic guitars an AG-15 from UltraSound, like this one:
I don't think EITHER cabinet is going to give you oodles of booming bass, as the speakers are too small, and you can sort of hear that in the demo you posted, but, either one works well with the K&K pickup, I think.