I have someone asking me for a wedding cake. She wants three separate round cakes. The cakes will serve 100-150 people and the point she emphasized was it being easy to slice and share. Would two 11x3 inch cakes weigh 4 kg? I haven't baked large cake before so I'm not sure about the weight. I usually use a simple vanilla cake recipe for the base and cream cheese for the icing. Here is the recipe in case it matters:
4 eggs
1 and 1/2 cups sugar
1 cup oil
1 cup buttermilk
2 and 1/2 cups flour
2 and 1/2 tsp baking powder
1 tsp baking soda
1 tsp vanilla powder