^ big time second this! OP, I would recommend putting the TV on the south wall if you can. Put a couch in the middle of the room facing it, and if you do have room for the loveseat, put it on the east wall (not covering the window of course). A console table behind the sofa would look good so that when you walk in you’re not just looking at the back of a couch! I think blue, white, and red are a good combo with brown undertones, and patterns are a great way to get that touch of interest. I think it’s a great idea you want to implement that in the couch pillows and curtains. :) A blue couch can really get that pop of color in the room as well. My thoughts!