PrimaLuna DiaLogue Seven Speaker Match

Hey all

I'm looking to get my first component system, and I am totally in love with PrimaLuna's amp and preamp. My plan is to get they DiaLogue Seven monoblocks, as well as the DiaLogue Three preamp.

My source will be vinyl or my iPhone/iPod.

My musical tastes are mainly rock, metal, bluegrass, alt-country, and folk.

I'm not worried about deafening anyone -- I just want good, solid, organinc musical reproduction.

With that said, does anyone have any speaker recommendations for a full PrimaLuna rig? I'm sure Thiel CS3.7s sound glorious, but is something like that -- which wants 300-600 watts of power -- "too much speaker" for these amps?

Any thoughts would be MUCH appreciated!