I love Okeetees, that's what I used to raise & what my 21 year old corn is. Something related that I've not had & really like...have you seen Abbott's? It's basically
an Okeetee with much bolder black borders. But there's so many beautiful corns, good luck choosing just one, haha!
BTW, it will be quite some time before your corn snake grows into a 40 gal.* but do spend your time making sure there are no tiny (4-5 mm) gaps in cage tops. Even if a snake cannot successfully get thru a small gap, some get fatally injured just trying...snakes do their best to "seriously impress" us even when it hurts them.(*you might want to transition to a 20-30 gal. size first)