What you talking about Willis?
The 27 inch screen I spec'd is 1080P the 6990 will run through it just fine, he can still use the old screen as a 2nd display.
Of course we all have different opinions, there never strictly speaking is a "right answer". However I don't know how long he has left warranty wise on the kit he has. What I don't like about the P series mobos is the lack of onboard video output. If there is an issue with the GPU its much easier to diagnose when you have an IGP to use. When you factor in that the LucidMVP (and quicksync) software make clever use of the IGP as I explained it becomes even more useful.
A really good sized fast SSD and the storage HDD was a good safe shout. Although something tells me that his P series mobo doesn't do sataIII.....I could be wrong but if im right a lot of the speed of your suggested SSD is wasted