Multyway over zone

I want to use zones to mix multi-way acoustics, with multiple DACs that are the same and connected to the endpoint via USB, and all the DACs are synchronized via WORLDClock. Will the resulting audio stream be perfectly synchronized with this configuration? And will the synchronization be maintained over time?

I have found that the MAC OS aggregate device does not output the sound correctly, and the multichannel DACs do not provide sufficient quality, so I have to resort to this non-trivial setup.