I'm going to brew a oatmeal stout recipe via all grain. I was thinking of adding some pumpkin and spices to make it a pumpkin oatmeal. Anyone have any thoughts on this? Also I have only done pumpkin in an extract kit where I steeped it in a bag at 170. I assume I can just add it to the mash tun now? At what point do I add it? The start or wait until transferring to boil kettle?