Why not get floor stands for the guitars? Makes it much easier to grab one, and you won't scar the walls in the process. A better investment would be to wall mount the TV on an adjustable arm.

Maybe a bigger book shelf /console table for the tv. I like the guitar(s) on the wall.

My son hung his on the walls..they are safer there.....The walls did not get marred. He used two pegs.

Using what you have, I’d suggest this configuration for the wall. If you mount the tv, keep it low just above the book shelves. Hopefully you can fit the lamp, music stand, and floor gear in the corner. Then I’d move the skate boards to the left of the window.

Agree TV would be better on the wall. Wondering about the window wall with skateboard decks - very symmetrical with equal wall space on both sides of window - My thought is to hang one board on each side. Take board that’s closest to right corner & hang on left side of window matching spacing of the board that stays put. Kind of a unique window treatment adding to the vertical blinds? The wall space may not be equal but looks close - pic taken at angle so hard to tell