Here's the shop basic layout. Has huge problems in terms of speaker placement. I spend 90% of my time at the left workstation (5x6 table) which means I only hear the left speaker. The more I think about it, I could make shelves for speakers on the walls above the tumbler and to the right of the second workstation. Each station as a huge window in front, makes working at each nice.
Those Polk SDAs I posted earlier would probably fit easily on a wall.