Hm.. for long fights, that isn't actually a bad idea, since Ahrim's staff is cheap lost on death as well. It all depends on what armor you want to utilize and how much management you want to deal with. As great as the Staff of Light is, it might not be the best in some situations. For example, if you go onto 0-item worlds, Zuriel's Staff would be the best option. On the other hand, Ahrim's is very selective, since it lacks defence bonuses. I find that set to by most useful for food fights against non-hybrids, or when Blood Barraging groups of people.