well
I am sorry Racheal but you don't even have four corns in a tank yet so you can't really say its going to work or not. (not trying to be rude)
Are they adults?
If they aren't you really honestly can't say how it will go. That's not "my opinion" and its not me being stubborn. Its fact. If you haven't raised four adult corns together I really don't see how you can tell someone else its working o.k. Hatchlings are one thing, yearlings are one thing, adults are another.
I am sorry, and I really don't mean to offend you but its not a matter of opinion like you are saying..and frankly you have no clue if it will work or not if you don't already have 4 corns living in the tank together. (do you??) How many of your snakes that are living together are adults? You never answered my questions about the heating situation and hiding spots as to how this will work with proper thermoregulation for each snake. Its fine to have them living together if thats your choice (well fine for you i wouldnt do it myself) but what about early pregnancy? I see you have two females living with a male???? I am not bringing this out to upset you, I am saying it because its an honest concern. How will you prevent mating? I mean there are a thousand points I could bring up and ask you that I hope you have thought about. thats all.
Look the point here is not to upset you, not to say you are wrong, and not to be rude. The point is that adult corns need room. And unless you have adult corns, you can't say what is good for four corns in the long run. I mean thats fact is it not?

I hope you think about certain things when putting your snakes together (especially the breeding)
bmm
P.S Just so everyone is clear..I am not saiyng housing together is wrong. It can work. My personal opinion is you are less likely to have problems when housing seperatly. That's all. But the problems assoiciated with housing together *are* a serious concern.....i.e. early breeding, passing of sickness, etc.