One of the problems with SiC is that it's hard/hard to cut (SiC is used for cutting), and, if you can cut it, it can potentially damage it structurally, so the really big sizes they carry aren't all that useful for us.
Still, I'd be very curious as to how your experiments work out. Do you have a powerful broiler in your oven? To achieve Neapolitan bake times with SiC you need an extremely powerful broiler- high wattage, lots of coils.