Matt Rogers
Novice
i too am size 13, so is my "little" brother. My feet dont stand straight up while sleeping and it doesnt bother me at all. Also, i too added a memory foam topper. However, my brother for some reason is bothered by the low ceiling height at your feet, his feet are straight up! EASY solution, lay sofa bottom flat and put your pillow all the way up at sofa back. Being over 6'3" tall, this will bring your feet outta the danger zone, and also your knees wont bonk the cabinet bottom if you bend your legs. If you sleep by yourself, sleep diagonal!