Need help picking a amp for my subs?

That amp will work, but since you have 1600 watts of sub, it won't hit very hard. (Or at least as hard as they're capable of) I'm not saying it won't be loud, 600 watts is a lot of power, but if you have the cash to spend, a bigger amp will sound better. One thing to keep in mind, is you want to match the wattage of the amp as closely as you can to the wattage of the speakers. That way you're not likely to blow the subs, or fry the amp.