Yeah, thats a good card, and will support dual monitor desktops/videos etc easily.
To answer your question, that seems like a good monitor yeah, but personally, I wouldn't go widescreen.
Some games won't support it, so you'll get ugly black lines, or stretching at worst.
But thats just my opinion. A lot of people are happy with wide screens, but for me, thats just not much of a gamer, it'd be more of a hamper.