Hmmm....
There are quite a few people doing emoryi crosses. The most common is the Creamsicle. If that were my snake, I'd be inclined to breed it to a Motley Creamsicle. There's a good chance it's het amel and you'd be able to produce more Motley Creams. If you breed it to a pure corn, there's a real good chance that you'd dilute the emoryi gene to the extent that you couldn't see it in the snakes.
'In my opinoin' crossing it with a pure corn would be a mistake, I'd go with other emoryi crosses to try and stay close to a 50% corn-emoryi cross. There are too many people breeding these days to let emoryi genes go without proper ID. Even if you are very specific about the genetic makeup of the offspring, it can still get lost after the babies change hands.