Honestly sounds like a really good match to us.
Currently we are doing AOTC while rebuilding some roster for casual mythic (if thats your thing) but our focus is AOTC every tier ASAP.
We do decently regular M+ and our discord is pretty damn active. The whole thing here in our recruitment post might help.
Guild Spiel
That said, we have a Horde and alliance guild, although the alliance guild is the older one, its the quieter one at the moment. We raid 7:30-10:30 (ish) on Tue/Wed (ignore what the speil says, we changed our times to meet a bunch of peoples schedules a few weeks ago and the OP hasnt gotten around to updating it (yet, maybe)).
Let me know if interested or if you have any questions!