I'm not sure where to get one there, but I can answer your other questions based on my experiences so far. I got my first hoggy, an albino male (9g at the time) about a month ago.

So far he has a feeding response/metabolism that is so much higher than my BPs! He is literally a hog! He will happily eat daily if I let him. I started him off on large pinkies and he hasn't finished them so we are feeding them off every other day. Anyway, with the increase in eating comes an increase in pooping!! I have heard they can have feeding issues, but I've experienced the opposite. I would suggest only choosing a snake that is a good solid feeder of f/t mice.

I keep him on/in carefresh. I make it about 3 inches deep and he burrows into it. I had some hides at first (individual greek yogurt tubs with a hole), but he wasn't using them and opted to burrow. Not surprising since the "nose" scale is adapted for digging/burrowing. When he poops he often poops under the substrate so spot cleaning is nearly impossible. As a result of both, he requires full substrate changes much more often than my BPs.

Humidity should be kept fairly low. I actually tried keeping him in a sterlite shoebox at first but I couldn't keep the humidity down enough (it kept jumping up to 60%+), even though he was on dry carefresh and the water was on the cool side. From what I've read it's best to keep it under 40%. He's in a 5gal fish tank with full ventilation now (He'll be moving to 20gal soon). I might have been able to make the tub work with a LOT more holes, but this was easier. If you can keep your tubs that low, then it should be fine, but be aware that these are very small snakes (esp. at first) and can squeeze through very small gaps!

Temps I keep the same as my BPs, 90F hot spot, and 80F ambient.

This is Wilbur, and I agree with you, they are adorable!