Going by the description of what you’re looking for, I think we would be a perfect fit. Our guild is almost entirely 30+, even. I’ve sent you a friend request in game, too. 
We are a newly re-formed guild that will focus on mythic raiding and pushing CE as soon as we can fill out our roster and get everyone geared up. In the mean time, we are organizing Heroic PUGs during our normal raiding hours of Thursday & Monday 8-11pm Eastern. Try us out for a night. My contact information can be found here: