I wanted a GTP for my first snake but I am glad I didn't go that route. My inexperience at the time would have been unfair and potentially harmful to the snake.
Arboreal snakes are very awesome and that is why I ended up going with a Bredli for my first. Bredli are very forgiving and easy to maintain. Its pretty cool to watch them climb around and coil up like a rope draped over a branch.
Someday I hope to add a GTP to my broodbut I gotta get through a year or two of this RTB first.