I have always felt that space is a good thing, as long as you provide plenty of hides.
My BP has been in a 48"x24" cage since he was small and I see him out and using all that space at night. He's grown into a large male with great muscle tone and an amazing appetite. I like to think that having plenty of space to stretch out and exercise has played a role in his robust health.

but again, you must have lots of hides and decor to prevent a BP from feeling too exposed. I have 4 hides plus fake plants and two large water dishes in the enclosure.