Overkill for small room

A small room can actually be your friend. My system resides in a smaller room than you are working with, but like stated above, with the correct room acoustic treatments, the system can sound great. I use two small subwoofers to smooth out the response and a medium powered tube amp ( and a high powered ss amp, which sounds about the same in volume as the tube amp, although I do not use the ss amp at the same time as the tube amps). The size of the speakers does matter, but the speakers you are contemplating should be fine, assuming some care in placement and some acoustic treatments. Is this room going to be dedicated room?

I would also suggest going tube preamp and ss amp. Tube amps can sound amazing, but they do require more in ongoing maintenance and cost ( usually).and they typically run hotter ( this is something to consider...heat is not your friend in a small room). Whereas, I think you get about 90% + of the way there with a tube preamp and good ss amp. The Dynaudio’s work well with both a medium powered tube amp and a medium to high powered ss amp. So long as flea powered ( single ended typically) tube amps are not in the mix, all should be good.