Since you are not intending to buy one for a while, I would do some researching and check out a couple of GTP forums. You definitely need to shop wise and don't be afraid to spend a bit more money on one that you really like.
Arus are some of the tamest. Sorongs are nice too. Biaks tend to be a bit higher strung than the other locales.
If you are truly looking for a locale GTP, you need to check parents and do reference searches. Many people tag on a locale to their GTP's to make a little more money on them.

I also noticed on your signature, that you have a coastal x eastern carpet. What is an eastern carpet?? I am fairly well versed in carpet pythons and never heard of an eastern carpet.