GW, I think that you probably meant 500 shekels of cassia in your first post, rather than 24 500. It may have been a good idea to leave out the cassia in your formula because it contains large amounts of coumarin. To quote wiki...
I have both Ceylon cinnamon oil and cassia oil and the Ceylon cinnamon is much sweeter and pleasant. The cassia oil is alot stronger and darker in aroma and smells like those fireball gobstoppers. A little cassia might work well in the formula but it would probably smell better and be safer if the majority of the cinnamon was of the Ceylon variety.
Good eye! I hate it when I mispell numbers!