I am looking at this site for a cage: http://boamaster.com/products/pvc_30..._12-105-5.html

Right now I am dealing with the lovely tanks that are crap for heat and humidity. I was told by a friend to invest in a Boa Master pvc 30" by 18" by 12". Right now my biggest girl is in a 75 gallon (4ft long by 18 in wide). Would dropping down to the 30" one be too small? She is 2050 grams and still growing. She is four and a half feet long.

Do I need a heat panel and flex watt or one?
My room is usually like 65 degrees in the winter time.
Has anyone used this type of cage? Good or bad? Which thermostat works best? And where is the best place to get those black thermometers everyone has? I keep looking but have yet to find one.

Also what size would be good for a 120 gram albino? I mean he will be growing so I want something that will last a while.
Thanks
Nichole