Your BP sounds just like mine, I have had Mr slithers for 5 weeks now and everything seems great, the heat, Humidity his eating and just general health seems good but I don't think his shed yet. I keep seeing him rub against the rocks in his viv but his eyes look the same he has no pink belly and his still eating weekly but like yours mine has only pee'd or pooped once. I keep checking the viv daily to make sure I haven't missed anything but its clean. On his back he looks like he is getting wrinkled scales that should be shedding so Im' hoping his starting to now.
Like people say on here every snake is different so I'm not worrying yet as he seems in good health. Try not to stress about it and just enjoy him.