I have not heard the speakers you are suggesting, but I think your basic idea is sound. I think, if what one wants is the best possible sound, one should spend the most on speakers. I was going to suggest spending about $1500 on speakers and about $500 on electronics, suggesting that he forget about tubes altogether.
I have done this sort of thing myself; for my home theatre, I have a receiver that retails for about $600 and speakers (including subwoofers) that retail for over $6000. With a more expensive receiver, I would get more features and power that I don't need, not better sound. With lessor speakers, I would get lessor sound. I think one should spend almost as little as possible on the electronics, and put almost everything into the speakers (obviously, if one's choice of speakers were terribly inefficient or a difficult load, then one would need to get a more robust amplifier, but otherwise it is a waste of money).
Of course, if the goal is not the best possible sound, but to impress audiophools, then tubes and thick wires are the way to go.