Breeding hybrids is something you should seriously think about before you do tho....there are a lot of purists out there who hate the very idea of it. Selling hybrids can also be a challenge, especially if you end up with less than pleasant looking kids. The albino traits are compatible, but I haven't seen anyone cross something like a ghost corn with an albino cal king.
Creamsicle corns are guttata/emoryi hybrids. Don has crossed grey rats with corns for a "frosted" creamsicle. Jungle corns generally turn out good looking and mellow. Bubblegum ratsnakes are yellow rat/black rat crosses (sometimes a third ssp tossed in as well). I tried 2 of my male corns with my bubblegum rat this year, but no go...her smell was prolly too different for them. I thought about picking up some jungle corns this year, but decided to go for honduran morphs instead.
and as to the agressiveness of kings and ratsnakes...I have a pair of Brooks kings that are mellow as can be, and a miami corn that tries to nail me every time...everyone has their own personality.