Regarding room treatments, I would only spend effort on that after all else is dialed in and only as an option.
If you find the bass to be a bit much or not articulate or obscuring the midrange, do try the isolating pads under the Ohms.
In my L shaped room where I typically sit and listen at one or two locations 12’ or so back in the long section of the L, I did add 3’X3’ decorative absorption panels (also Auralex off Amazon I think, very clean looking, wife has never said a word) at the primary reflection points on the side wall. That helped to reduce and focus the soundstage a bit by reducing strongest sidewall reflections. VEry inexpensive and easy to try if desired. I can post pics if desired. My right speaker in particular is less than 3’ from the side wall).
By primary reflection point, I mean the location on the side wall where reflected sound would be directed at my primary listening position (with Ohms you might listen from most anywhere in your room and sound should remain coherent and soundstage in place, only from different perspectives).
That is the extent of room treatments for me. I strive to setup my stuff to best use the room at hand, not try and fight it. Like yours, none of my rooms are purely devoted to audio so you have to take a somewhat more practical approach with room acoustics.
