First you should read this sticky:http://www.tomshardware.com/forum/261222-31-build-advice
The best motherboard for you will depend on what purpose the machine is used for and budget. I can recommend motherboards from $40 to $200.
Not gaming? Then you don't really need a 3D graphics card. You also don't need a 650W power supply, you'd be better off with a quality unit of 500W.
I'm not sure multimonitors are a good use of your money unless you want to have surround gaming experience. In which case, 3 monitors is better because then you won't have a bezel in your center field of view.
Follow the sticky, then we can better offer some suggestions customized for your needs.