As @carlsbad2 mentioned @aricaudio I’ll mention that I own his Super 300B amp. It’s not exactly the data point you are looking for because my speakers are a lot more efficient than yours. I urge you to go to Aric’s website and look at his products. Hand built and point to point wired amplifiers and preamplifiers that are incredible.
Depending on the size of your room and how loud you listen, 8 watts might be all you need. If so, I’d advise to go with an SET of some flavor over push-pull.