There's oodles you can do. Don't forget, mini monitors need stands. You can, easily, put Revel M20s or the like in that space. Actually, the M20s are not tube friendly because they need lots of wattage, but the size is the factor I was getting at. These are the speakers I use, so I'm familiar. You set yourself up with a nice 6 foot equilateral triangle and keep your speakers 3 1/2 feet from the back wall, and your listening chair, likewise/3 1/2 feet, from the wall in back of it--you'll be in business. peace, warren