nice new enclosure

[hgilsew23]

I am building a large new enclosure for my beardy Rex he is full grown and the enclosure I am using now a 40 gal just seems restrictive for him so I went to my work place and picked up some double hung display windows with popout paines to make cleaning a breeze and I want to mount all for of them together to make a large box type shape I consider myself to be somewhat of a wood expert because I have worked at home improvement stores such as lowes/homedepot for 4 years in the lumber department I want to use cedar posts for the sides sanded smoth so as to look nice the hole thing will be aprox 36inch square X 24inch high the two questions are will the cedar smell hurt my dragon and if I use a wood sealer what type would be best I have read that a water based polycrylic or shellac would be good but that seems harsh.I dont want to cover up the wood with lamanit so what should I use that wont hurt Rex