Honestly, 100 sets of ears will define "ideal" differently. Best you play with it, get it how you like it, take a picture of it with your cell phone, and refer to it as needed.

Back in the day we would take a Polaroid in every room to show the EQ as it sounded best. Of course now, you pink the room out and your EQ sets itself, but that WAS the 80s after all....