i am awful with building things so i cant help you much there. But Reptariums work pretty well, in my experience, with CWD and are pretty cheap. You can get them up to 260 gallons, for only about $100..
Make sure there are lots of sturdy climbing branches and provide them with a big water source. My friends CWD is in a 100gallon reptarium and she uses a horse water bucket with a filter attached for water. He loves it!!!
http://lllreptile.com/store/catalog/reptile-cage-supplies/reptariums-and-accessories/
hope that helps a little
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1.0 green iguana-Deitrich
1.1 Common Boa-Un-Named, Ursula
1.0 Ball Python-Anabell (go figure!)
1.0 Red Tegu-Uteg
1.0 Albino Cal King-Pig
0.1 Mexican Black King-Morticia
1.1 Bearded Dragons-Unnamed, Hanabil
1.0 Albino San Diego Gopher-Unnamed
0.1 Hermans tort-Esio
1.1 JCP-Milton, Medusa
1.1 Reverse Okeetee Corn-Unnamed
0.1 Snow Corn-Unnamed
1.0 Hypo Okeetee Corn-Unnamed
0.1 Motley Okeetee-Unnamed
1.0 Western Hoggie-Wyrm
0.0.1 Rose Hair Taruntla-Unnamed
2.0 Leopard Geckos-Reptar, Pogo
4.1 cats-Tucker,Poe,Abhib,Emerald, Felicity
0.1 Bullmastiff-Asha