Just a thought off the top. Your first concern for an amp should be if it offers the sound characteristics you’re looking for because if not what’s the point and then concern yourself with power. The Cremonese’s sensitivity is a relatively high 92dB with a nominal impedance of 4 Ohms. What this tells me is that even more than higher Wpc you should pay attention to an amp’s power supply. With a nominal impedance of 4 Ohms it’s reasonable to assume it drops below that in at least one if not two points over the frequency range, so you need an amp that has the power reserves to handle those dips. With their high sensitivity I kinda doubt you’d need much more than 200Wpc if that amp can double into 4 Ohms and close to double again into 2 Ohms. Bottom line is you don’t necessarily need huge Wpc to make the Cremonese sing in full voice.
That said, do not ignore the importance of the preamp that is often at least as important as an amp, and in many cases, like mine, the preamp can have significantly more influence on a system’s performance than an amp. Balance in a system is critical, so your amp and preamp should be on the same level performance wise or one could easily become a bottleneck. Likewise the DAC should be at a similar performance level as the pre and amp, and personally I wouldn’t attack cables until I had these other pieces in place, but eventually they’ll be important to address too and need to synergize with everything else. Again, FWIW.