That unit should do ya just fine...... just practice with it on anything you can get your hands on. That's the key with whatever iron you use.... PRACTICE.
I personally use their cheapest 30watt pencil iron, but then again it's all about how much you practice with it.
That solder is a bit big for smaller components like IC's and such, but should do you fine also with practice. Really it's just a matter of how you control how much and where you put it.
Did I mention the PRACTICE part.

I would reccomend one of their de-soldering irons as well. The one with the red/orange sucker bulbs on it. Great for removing solder from component pins.