Absolutely, I would do it. I moved from Cremona to Olympica iii… huge improvement in all aspects of sound. I think I had those for about seven years before upgrading again to Amati Traditional.
I am a huge Sonus Faber fan since I first purchased the used Cremona as a test. Incredibly natural sound, detailed but not remotely etched… if I ever buy another set of speakers it will be the Sonus Faber Lilium.
The Moon products will get the job done. You will get a huge improvement in sound quality with the speakers and be in a great position to upgrade your preamp / streamer / DAC at some later date.
The Olympica are capable of supporting your electronics and much better equipment as well.