Computer for Photoshop

Hello. My sister-in-law is a professional photographer. Since I have experience in putting together computers, I was asked to help her build a computer for her use. She uses Adobe Photoshop CS5 (wil probbably upgrade to CS6 soon) and takes photos in 32 MegaPixel, and maybe even more in the future. I tried putting together something on a norweigan website where I can buy parts, at it looks like this:

ASUS P8Z77-V DELUXE $340
Corsair SSD Force Series GT 180GB 2.5" £235
Crucial DDR3 BallistiX Elite 1600Mhz 4GB $130 (x4 $120)
Intel® Core i5-3570K $300
Lite-On DVD±RW Writer $30
Logitech Desktop MK120 Mouse and keyboard $27
Logitech Speaker System Z323 $60
PNY Quadro® 2000D 1GB GDDR5 $720
Seagate Barracuda® 3TB SATA 6Gb/s $190
Silver Power SP-S850 850W $135
In-Win EA040 Midi Tower $70

This is of course without a screen, of wich I have no clue of what to look for.

I tried posting this on a norwegian forum, and got an suggestion, which i doubted a little. It reads:

Asus PB278Q $785
Intel Core i7 3930K $735
Asus GeForce GTX 660 TI OC 2GB $425
Asus P9X79 PRO $375
Corsair SP2500 $225
Intel 335 Series SSD 240GB $220
Logitech G710 Gaming Keyboard $185
Seagate Barracuda 3TB 6Gb/s $170 (x2 $340)
Corsair TX850M 850W $160
Logitech G700 $100
CORSAIR 16GB DDR3 VENGEANCE LP PC3-12800 1600MHZ CL9 (4X8GB) $200
And no case, whitch is not important

Theese are about the same price, only the screen makes the last example more expensive, but a screen is needed anyway.
My sister-in-law is willing to pay what it takes to get a computer good enough for her professional use. Se expects to paw at least $2500-3500. I don't know whats she's doing about sccreen, because she knows alot about it. Maby she picks a screen worth $3000-4000.

So my question is. What do you think? I just needs some other points of view. I accept that i don't know anything about this matter. I can accept the powerfull processor, the SSD, the HDD's and the PSU of the later example.
I have the Asus P8Z77-V DELUXE, the Intel Core i5-3570K myself, and are very happy with them all. I allso have the Logitech G700 Mouse, and are happy with that aswell.

The guy that gave me that latter example told me that a extremly good GPU wasn't neccesary, but then I ask myself, Why a GTX 660 TI? Is that neccesary then? Wouldn't I get a good enough card for $250-300?

Remember. This is a vcomputer to be used by a professional photographer. Not a gamer.

I appologize for spelling mistakes

Thank You

- Magnum