Again, this is my first basement room to set up in on a permanent basis. Bisecting the room is the center support beam of the house, 6"(15cm) wide by 8"(20cm) high, with a lally column about 1/3 from wall. Room is 12'(3.66m) wide by about 22'(6.71m) long. There are HVAC ducts to one side of...