As long as you are able to keep all the temperatures and humidity stable and offer plenty of cover / hides it should be fine. But it's going to need an upgrade to something bigger as it grows. I started my 130 gram snake in a 40 gal and had no issues. HOWEVER I had the tanks set up for a few weeks prior to getting the snake so I was sure the temps were right and he had 6-8 hides and plenty of cover.
I don't think that there is such a thing as too big of a cage for any animal if you can meet all of it's needs and know how to recognize stress when something isn't working.