WASC is my go to recipe. For vanilla cake you can use vanilla yogurt, vanilla coffee creamer, and vanilla paste. As far as the heating core or flower nail, you should always use one or the other when baking a cake 10" or larger. It will help conduct heat to the center of the cake for more even baking, otherwise the edges of the cake will bake quicker than the center. I would also advise using baking strips for a pan that size.