what are you gaining? and what are you losing? when you put a low powered mismatched amp to a hard to drive speaker????
how large is your room? how loud do you listen? how close do you sit? how important is space and scale and the lowest octave? how flat is the impedance curve of the speaker?
here is a very concise article "Lies, Damn Lies, and Speaker Sensitivity Specs" written by Robert Harley in the Feb 23’ Issue of Absolute Sound regarding speaker efficiency. how specs can be misleading, and how it affects amplifier<->speaker matching. it’s a good place to start this conversation......
https://www.enjoythemusic.com/The_Absolute_Sound/02_2023/editorial.htm
i’m not always the biggest Harley fan with his tendency toward hyperbole.....but in this case he nailes it. a quick read worth your time.