Need some advice….

I currently have a Clarett 8 PreX. I got this 8 years ago when released and I love it. I’m wanting to expand with ADAT, would it be wiser for me to get a new interface, that has ADAT in and out and use the Clarett PreX as the slave in this? It’s older and I had to do several things just to get it to work on my MacBook. I need advice!