Those look goddamn impressive.
I wonder if they sound like the 'classic' CVs?
Now, OP, power is great to have, and it sets you free to choose virtually any speaker you like, without having to worry about the ability to drive it, but you've told us nothing about what you want/like in a speaker.
Right now I'm listening to Shine on you Crazy Diamond parts 1-5, nearfield, driving my maggie 1.6Qr's with my Carver M 1.5t(350wpc), and the lights are dancing on the carver, which means the maggies are just eating up the power.
You could feed all that power to a pair of 1.7 and be done, but it depends on what you want to hear.
nearfield, maggies are like gigantic headphones that go floor to ceiling, it's a most immersive experience.
I've pegged both my PM 1.5(450wpc@4) and my PM 350(450wpc@4) easily driving my magnepan 2.5r speakers, so they'll take all the power you can feed them.
But, I must say, you could easily attain the spl with a pair of klipschorns and one amp, maybe VOTT altecs? You should be able to drive any Infinty speaker properly to it's limits, none of my Infinity's have ever pegged an amp no matter the db. (I run out of ears before they run out of power on Infinity speakers.)
what do you want in sound?