Having cleaned up some loads from our foster BCI whose about 6 feet long (the snake NOT his poop), I can tell you that pretty much looks like a typical big BCI dump but getting a fecal is always a good idea (and you certainly have lots to choose from )
Rauri the BCI only goes once, maybe twice a month but once a month isn't wierd for him anyways and it's always huge and usually preceeded by a large manly snake fart LOL. My labrador retreiver didn't dump that big!