I would really urge you to wait! Take your time...and don't make a decision until you are dead set on a pair of speakers. I'm talking that you don't make a decision on the tube amp until your ready to purchase the speakers.
The Sonatina's and Sonata's are nice sounding speakers (how big is the room?) that are "tube friendly. Depending on your requirements you have a wide range of choices for tube amps (SET and PP). But who knows what you are going to do. A 45 based amp, 300b, 2A3, PP???
You may end up going with tube friendly speakers, but you may not. Who knows what will come your way? I'd vote for waiting.
have fun,
dan