package should have a temperature listed on it too! I would go with 325F and bake it for 15 minutes per pound? since it is so large! You want it heated all the way throughHam is already cooked by way of smoker! so all you have to do is make sure you have it heated all the way throughIf you heat it at a lower temp then yes, to the 30 minutes per half pound! You could put it in the oven at night at 200F and cover it tightly with foil and have it ready for after church Easter Sunday.