I would personally like to see some pictures of this thing. I've never heard of a 200 watt iron that's shaped like a standard iron, anything that large is usually a gun. Can you send some photo's?
If it's really 200 watts you might be okay, as long as it has a trigger and isn't just BAM 200 watts on all the time, also for IC's and what not you'll need a grounded tip, and large heating elements like that aren't always grounded. If it IS actually a triggered 200 watt iron it's VERY useful in my opinion. It'd take a little more finesse to use but localized fast heating is useful for some components, and all you have to do is learn to control the trigger for slower heat build up times.