If you do it, do it for games you want now, not for games you think you will want.
Also, do it for a Wii, and not for a 360. The PS3 will likely have comparable as many exclusives as the 360, but the wii will get the most. With BluRay and other features of the PS3, it's not worth the change to sell and get a 360.
I would hold off until you can convince your wife that you need two consoles. A PS3 + Wii is the way to go... and just keep what you have for now unless you are not satisfied with it, and are certain you will be happy with a Wii.








