Toasted Hippo, that's a wonderful Honduran Milk snake you've got (I've not kept any Hondurans in the past, btw); I assume he's mellower now though because
he's, well, 25? I can remember the hatchling milk snakes I had (Pueblan & Sinaloan), & unless you have great manual dexterity & good reflexes, they're super
quick & wiggly...VERY hard to hang onto. Things you never handle near a sink, for example... But they are beautiful & cool too, especially after they grow some.

That's funny about him going around your waist like a belt...some of my rat snakes that are long enough do that as well, and one of the Trans Pecos I used to
have actually remembered on repeated occasions to thread herself thru the belt loops on my jeans, like a rock-climber....silly sneks.

And for the OP, corn snakes can actually get bigger than 4'...my oldest now is 20 years old & Pretzell is about 5' (he's an Okeetee corn). So in terms of size, the
smallest & most docile "rat snakes" that I'm familiar with that meet your criteria are corn & Trans Pecos rat snakes. Corns are far more plentiful & probably less $
-depending on the variety you choose. Likewise, Trans Pecos are being bred for fancier colors that cost more, but to my eyes, the normal wild-type original ones
are still the best (and the only ones I can vouch for). Keep in mind that to get these fancier colors, some inbreeding is done, & that does not always result in the
strongest offspring that feed easily. It's not about price at all to me, I prefer captive-bred snakes that are closer to what "nature" does.