50-60% humidity is too low for either species. 65-70% is best with misting in the morning to raise it up a bit and then allowing for a "drying out" period over night.

Everything else looks pretty accurate, although I'd say the minimum sized enclosure for any arboreal species would be a 24x24x24 cube. Wider is better, but they really do need a minimum of 24 high. My Hunter is a large male (see pics below - he's full grown and 8 years old) at 5 feet long and I use a 36x24x24 cage for him and he uses every bit of it. But, if you went with a 36 long by 24 high, you could get away with only 18 deep.

As far as flexibility, these 2 species have pretty straight forward requirements. You get it right, or they won't thrive. However, they won't drop dead either if something is a bit off - their behavior will tell you if something needs fixing and then you simply fix it.

From my experience, ATBs seem to stay a bit "nippier" and many GTPs can be quite mellow - especially if you get a young adult and can evaluate its temperament before hand. And I highly recommend picking up at least a yearling if you go with a GTP. But the nippiness with ATBs is just a generalization - there are certainly some nice ones out there.

Can't remember if I posted this pic for you yet or not, so if you've seen it before - sorry! But this is my Hunter with his breeder's 8 year old son. He is very mellow and handlable.


And this is just him (Rocky's pic). Can't beat a GTP for a display snake!!