Most dogs LOVE, LOVE, LOVE liver, which is why it is used often as "bait" by dog show handlers. It is likely the top choice if dogs were voting. But liver is quite rich for dogs, their stool can turn to diarrhea if they eat much, also that richness can cause gas which the owners may not appreciate! Another "bait" often used at shows is hot dogs, or chicken, perhaps those would smell better as far as the baking, I know I can't bear the smell of liver.
Good luck, it sounds like FUN!!! :D