Amazon tree boa, Emerald Tree boa, not pythons but they look like it. I can't tell the difference anyways! lol
Ovbiously when you want an arboreal (sp?) You want height, How tall is that tank? You also have to think of the humidity requirements. But you seem to have done your research.
I don't know alot about these snakes but I think all of them can get between 4-6 feet, and I think you would want something taller than that tank looks for an adult.
I Have heard that tree boa's/pythons stress really easy. But I'm not sure which one it is.
Ok I'll shut up now I've probably confused you more than help you. lol.
That tank probably won't be tall enough for an adult. But I'm sure someone else will be able to help you better than me.