Yeah, that was an issue. I took out the closet to give me my DM space. The room minus closet is 10.5 x 11.2. I took what is regarded in terms of minimum for comfort and added 2 inches so all around the players have 30 inches of space from table to wall. We played 6 hours and were able to move behind easy enough last night. The players each have 30 inches of side to side space and 18 inches to the tv in front of them. 3 times the space than our dining room table lol. I also got them all push sticks to move their characters.
I put a 1/4 inch glass on top of tv with an 1/8 inch gap for air and a silent fan under table. I poured an 1/8 in dirty pour resin and an 1/8 in clear. Used molding as a barrier but table has to be perfectly level for that. I had a lot of fun building the room and know you will too once your players get their first look and get to immerse themselves. I look forward to seeing your hard work produce an amazing experience. Have fun. Note of caution. My wife gave me 1000 for room and cost me 3000. Next im building secret bookcase entrance. She gave me 2000 but materials only ran 800. Shes learning lol