Soundproofing and room correction for apartment?

Hey, was hoping to get some help on wife-friendly sound-proofing and room correction options.

I just moved to a new place and have a dedicated room, which is roughly 12' x 12' with 10.5' ceilings. I have neighbors above, below, and on the wall where my speakers are--not ideal. My system already sounds good (tremendous depth!) but there is definitely a little more reverb to the sound, a bit of bass slap and maybe too much depth, so voices sounded a tad recessed.

I was thinking of bass traps in the corners behind the speakers, and canvases lined with acoustic batting on each reflecting wall and on the ceiling, with a thick tapestry on the wall behind my head. I have a rug on the floor, and am going to put wall-to-wall carpeting with acoustic dimple pad underneath and corner mounts.

Am I missing anything? Is there a better approach? I can't obviously build another room in the room, and my wife draws the line at canvases on the wall, as WAF is an issue here, so it's gotta look nice, whatever I do.

Thanks!

BTW: My system is Devore Nines, Luxman L-550A II, MHDT Havana DAC, Mac MIni, and Clearaudio Performance TT all fed by Audience Adept Response AR12.