So I've been slowing acquiring supplies for my first ball python and the last item on the list is a tub! I have no clue what size I should use so my question is...

-What size tub would be good for a small python approx 173g (if that helps).

Below I have a 16" long, 10" wide, and 6" deep tub. I'm thinking this is too small but maybe I'm wrong? Please let me know your thoughts!