I am trying to decide on a rack case. At this point I have and Ampeg SVT4 Pro head and Ampeg 610 cab. I know that the head has a small vent in the back and larger vents on the side (which is a stupid design for a rackmount head). The head is 3U. Im not sure what to do about the side vents, I'm worried about overheating. I know I will want to get a rackmountable tuner, possible a wireless system and power conditioner which brings up another issue...weight. I'm a strong guy buy the head alone is like 40lbs. One thing I considered is a 4U rackcase for the head (with an empty slot for ventallation). And seperate rack case for the other stuff. Or would I be better off with one case? 
