Enclosure too big for my spotted python??

[Zali Ash]

Hi there,
I am soon getting a spotted python, he is currently 14 months old and 40cm long. The breeder recommended keeping it in a 45x60x60cm enclosure since he is still small and to wait to get a bigger enclosure until he is bigger.
However, I have this 80Lx50Wx50cmH enclosure, that of course I’d rather use if I can. Is double the length simply too big for now? Even if I include lots of hides and plants etc to fill it in?
I know the community is so divided on this topic in general, for baby snakes. Is he still a baby being more than a year old though..?
I really don’t want him to be stressed, and would be willing to get the recommended size, but I’d rather use what I have if I can.

 

[Python]

If the one you have is too large, is there a way to make a wall for the small space? Then, as he grows, you can move the wall to accommodate his growth.