I've got a 6 hole rack filled up right now in my snake closet. I have no room to put another rack next to it so I have to build up. Im thinking of adding a couple more female amaralis and I have no room. Right now my rack is a DIY melamine heated with flexwatt. Last time I added a snake I built a top unit and just added it to the top of the rack. Would there be any reason not to do this. Or should I just go with an AP or Boaphile rack.