Im getting tired of buying crappy heaters and thermostats! Im building a rack next weekend....its settled!

Im going combo rack for adults and childrens:
CB70s for adults
medium sized sterilites for the kids

Suggestions on a size for my yearling hognose snake? she is in 10 gallon right now.

Just a question about wiring the flexwatt. I can wire them in a series right? and can i wire 11" and 4" together?

Planning on getting the stuff from bean farm. Any where cheaper? Not that expensive there but cheaper is always nice as long as the quality is good.