Hi mlapenta, before turning your room into a ragamuffin I suggest you go listen to a pair of Magnapan 3.7i's. Dipole loudspeakers have one very major advantage over standard boxed speakers. They send very little sound to the sides, up or down. Standard speakers bounce sound off of everything, dipole line sources do not. The only room treatment you will need is some damping on the front wall right behind the speakers. You can add subs down the line. If you are into fine detail the Magnepans have arguably the best tweeter ever made. Since you have a squarish room you will have a standing wave problem in the bass. You could use multiple subs like many in this forum suggest or just move your listening position back and forth a few feet till you get the bass right. In just a few feet you will go from no bass to too much bass.
Speakers for a “cold” room
I have a terrible room 16 x 18 two bay windows (I do use heavy drapes in front of them). Partially hard wood floors, and plaster walls. 8 foot ceiling. I have acoustic zen adagio and want to upgrade. I am also going to upgrade the electronics. Jolida tube pre into emerald class d amps. I love the zen’s but find the upper mid’s a bit harsh. Bass is nice an punchy. So...... what would be a upgrade for a cold room. I was thinking golden ear triton 1’s due to build in sub. Thanks much in advance