I'm making a 12 inch cake for a kids birthday party this weekend and I plan to make the Hershey's perfect chocolate cake which was approved by the birthday boy. I have mostly baked 8 and 9 inch cakes so I want to make sure I'm able to nail this when I starts baking. I'm planning to double the recipe and make 4 layers in 12 inch pans. I will have to make this in two batches as I don't have an oven that can fit 4 12 inch pans at the same time. Do you think the layers will have reasonable height or should I multiply the recipe by 2.5? When I made the cake in the 9 inch pans it was tall, so I'm guessing I should be fine but I could be wrong. Any advice on this?
Also, should I reduce the oven temperature to 300 or 325 to ensure even cooking and avoid doming? I do plan to use the baking strips and flower nail.