It looks like it is a 60 minute boil, so throw a half ounce of hops in as soon as it starts boiling. After 45 minutes, throw in another half ounce of hops and the pumpkin, wait 15 minutes to make 60 minutes total boil, turn off heat and chill to fermentation temperature. Pitch your yeast and let it sit in the primary for 5-7 days. 24 hours before you are going to transfer the beer to secondary, soak the spices in rum. When you transfer the beer, pour the spices and rum through a coffee filter and add the filtered liquid to the beer. Let it sit another 6 or 7 days and bottle or keg.