I'd prefer combine them in a collab post, just make sure to indicate which character it is. 
We don't have to do four, we can do three or two if you want. If we do two each the group would be separated when they woke, but if we do three each the two could have died or are still sleeping or are a combination of both. I won't force you to do four if you're not working at your best that way.

I don't think I mentioned it, but if we do a full group we we'll both be doing two females and two males so the whole eight people in the team is balanced.

Shall we move to a PM for now to work out the finer details?