You will need to build two seperate enclosures for two almost adult males, otherwise one will dominate the other and it will cause additional stress to both. Resulting in possibly not feeding all the way to canabilism. You could build a multi unit one or two smaller stackable units. I prefer using the laminate shelving board available at Home Depot or Lowes. Comes in 4', 6', and 8' lengths and 10", 12", 14" and 16" wide. All you have to worry about finishing on this stuff is the edges and to do that I normally liberally apply silicone over it and then paint it in child safe paints.