Yes, that will set you for heating. I would suggest talking to Rich (RBI owner) and you can ask him to wire up the flex watt for you
I just want to let you know my hypo ate tonight. She is already in a small tub and I did what Becky suggested (live mouse feeding in stealth mode) and checked after 30 minutes and the mouse was gone!! You will have a happy beginning with your snake also- it's just in a very large environment- too large. Make the space smaller and you will get good results!!