If you can stretch your budget, consider a +player, all in one box from Merging Technologies. It has it all, Pre/DAC/Roon Core/Renderer. The +player will eliminate the need for Zen Mk III, Schiit Freya pre, Yggdrassil DAC and go direct into your Aegir monoblocks. With +player, you are also stepping up in DAC performance. I bought +player last year in August and couldn’t be any happier. It has replaced my previous setup of EMM Labs DA2 and Aurender N20 ($37K in retail). I waited all these years to venture into Roon until I could find a state-of-the-art Core/renderer + DAC solution. If you’re interested, PM me to learn more about my setup.
PS: Nice speakers!