Jeff Bagby Kairos with PP Tube Amplifier

I don't see why it should be a problem. Impendance is not to low for a typical tube amp and the peaks in the impendance are not that high that a push pull tube amp can't handle it. For an SE i would probally try to mod it to get les severe peaks in the impendance (mainly the one at 1kHz will cause problems), but not for a Push Pull.
 
How many watts is your PP amp and how loud do you like to listen?

They are 85dB and I've run speakers with similar specs on a 8 watt SE amp to levels plenty loud enough for me. But some people have bigger rooms and like their music louder.

Also, your English is quite good; probably better than mine.