Every room sounds different, so if it is working right for you, then run with it

Sounds like a LOT of sub for a room that size, but there's nothing wrong with that
My main HT is 23x13, which is close to a 2:1 ratio, however I also have a sloped ceiling that goes to about 20ft, so I don't get the "normal" kind of issues one would in a room like this.