Do you have a window on your current/planned case? Otherwise no matter how pretty it looks you won't be seeing the motherboard 99% of the time.
For a PSU you can get this
PC Power and Cooling Silencer MK III 600W. Its modular and is a highly rated PSU.
If you can take advantage of the ram thats fine. I tend to avoid throwing money around for no reason. You can drop the speed down to 1333MHz to save $30 too. You won't notice the difference between the two speeds at all.