There wouldn't be 8 more pints as I would be splitting a 5 gal batch into 2 2.5 gal batches.
As I mentioned earlier, if the is some headroom after pouring 2.5 gal into a 2.5 gal corny, I think that the solution for me is to get 2 2.5 gal cornys. If someone knows first hand that 2.5 gals of...