Hello I recently acquired a jewelry case which is 5 ft long and 20 in wide. I plan on making it into a snake tank for my 5 foot red tail boa. The issues I am having is with heating the tank and having good airflow. The top and three sides are glass and the back is two sliding doors which are wood backing and front mirror. I have a drill and bits to drill glass and I can make some other alterations just looking for some ideas on how to heat and have air flow