You absolutely cannot go wrong with a cage from ProLine/Constrictors NW. Ed is a great guy and very communicative! He also does some things custom so if you'd like a divider, I am sure he can do one for you. I am putting together a 5 stack of 4x2x2's for my own boas and he is very helpful. The quality of these cages is unsurpassed in my opinion. Ed uses marine grade High Density Polyethylene which is a far superior product to pvc. I have a pvc cage too, and am very happy with it, but given the choice, I moved to the HDP. One thing that my friend, who has these cages, pointed out is that urine will NOT stick to or absorb into the HDP whereas this can sometimes be problematic over time with pvc.
And you also cannot go wrong with a Herpstat. These are some of the best t-stats on the market. A hydrofarm will do you fine for initial applications, but as soon as you can afford it, I would invest in the Herpstat and use the hydrofarm as your backup.
Btw, Spider Robotics now makes the "Herpstat Intro" which is retailing from the Bean Farm for only $99! So a Herpstat is very affordable now........