Decision's, Decision's, Decision's

[GarterPython]

I have been trying to find out what type of snake I want to get next and I was starting to lean toward another corn snake. Then I thought how about we bump it up and try a ball python. Then I started to wonder and wonder, I think I ahve been on this forum and have learned enough about snakes to bump it up more than that. Now I am thinking a Green Tree Python. They look awesome and don't get to big (not entirely sure on there size so if someone could tell me how long a male Green Tree Python is that would be good) You guys have known me all throughout my time here and you know how I take care of my animals. Do you think I am ready to move from a corn snake all the way to a Green Tree Python. I really like challenges and I want to take this one. Just wanted to know what your peoples thoughts were?