Solution in studio A&H DT168 +?

I started a new job at a school were they have the vision to get things working in recording studios with Dante. This is new to me. We already have the traditional soundcard AD/DA in the studio hooked up to monitors via an analog monitor station. This setup needs to stay. I have tried to aggregate devices in OSX to combine the tho interfaces but latency will be to high. So...

My idea now is to by a ESI Planet 22x to put in the control room to only use Dante virtual soundcard. This way we get lower latency with 2 mic inputs for talkback and 2 outputs to connect to the analog monitor station.

Any reactions to this? Are there other better solutions? Bare in mind this is a school with limited budget...