I was planning on purchasing a Octagon Advance EX but first I have a few questions before spending a ton of money. The only room that I can put it in (where crazy cat can't get to it) can vary in temp - especially in the winter - by a good 10 degrees. Will it be ok? I am also wondering if the extra money for the digital stuff and the humidity pump is worth it. I work a lot - often times I'm gone from 7:30am-11:30pm - I was thinking the EX would make things a bit easier. What do you guys think?