Update on build....
I've installed the Love Temperature controller, I purchased the TSS2 and have wired it into a old External CD-ROM case. (I knew I saved those things for a good reason).
Thanks to several threads on this site, wiring and programming the controller was a snap. There are some extra wires in there which control the fans inside the chamber. I will be adding an Arduino for data collection and eventual http posting of images inside the chamber.
I will eventually install a heating element so that I can heat the chamber when temps do drop during the winter. I should have several months of warmer temps left this year though.