If creationists could spend a hundred million dollars to build a museum, why not spend the money on an experiment to prove that it was entirely possible for Noah and his family to take care of that many animal in an isolated system like the ark?
Seems pretty simple to me. Have a little less than a dozen good christian volunteers. Build a replica of the ark based on the specs from the bible. Put in it 2 animal of each "kind" and as much food and water as the replica ark could hold. Lock it up. Wait for a year and then open it up to see if anything is still alive.
PS We've been having some pretty far fetched reality tv shows lately. I'd pay real money to see such an experiment being done.