PC for Christmas - Intel Build

Hey, I've made a few threads now over the past few months and still undecided. The PC is being bought for my little brother for Christmas and he hasn't really had anything this powerful before. We are thinking of going with a system from NCIX.com. What do you guys think of this build?

Vesta Gamer Z2400 (Q2875884) Yes Q2875884 $1,275.37 $1,275.37
1 x PC ASSEMBLY AND TESTING (PRE-CONFIG OS IF PURCHASED)
1 x Intel Core 2 Duo E8400 Dual Core Processor LGA775 3.0GHZ Wolfdale 1333FSB 6MB Retail
1 x Please Use The Heatsink Included with My CPU -NOT Available with OEM Processors
1 x ASUS P5QL Pro ATX LGA775 P43 DDR2 1PCI-E16 2PCI-E1 3PCI SATA2 Sound GBLAN Motherboard
1 x Corsair XMS2 TWIN2X4096-6400C5 4GB DDR2 2X2GB PC2-6400 DDR2-800 CL 5-5-5-18 240PIN Memory Kit
1 x Radeon HD 4850 OEM 625MHZ 512MB GDDR3 1.986GHZ PCI-E Dual DVI-I *Systems Only - 1YR NCIX Warranty*
The 3rd party brand name for this product may vary
1 x Antec Three Hundred Mini Tower Gaming Case 300 ATX 3X5.25 6X3.5INT No PS Front USB & Audio
1 x Seasonic SS-400ET 400W EPS12V 20/24PIN ATX Power Supply Active PFC 80PLUS 6PIN PCI-E 120MM Fan OEM
1 x Acer X193WB Black 19IN Widescreen LCD Monitor 1440X900 2000:1 5MS VGA
1 x Steelseries Qck Mouse Pad 12.6X11.2IN
1 x Microsoft Windows Vista Home Premium Edition 64BIT DVD OEM
1 x Seagate Barracuda 7200.10 250GB SATA2 8.5MS 7200RPM 16MB Cache Hard Drive 5YR MFR Warranty
1 x Samsung SH-S223F/BEBS 22X Speed Plus Black SATA DVD Writer OEM
1 x nGear Flash Card Reader 3.5IN Internal USB Black CF/SM/SD/MMC/MS/XD 18IN Cable Seperated Connectors
1 x Logitech SBF-90 Black Optical Wheel Mouse USB OEM
1 x Logitech Classic Keyboard 200 Spill Resistant USB Black Keyboard
1 x Please Use The Onboard Sound Card Integrated On My Motherboard
1 x Logitech X-140 Speakers
1 x Please Use The Network Card Integrated On My Motherboard

Thing is, is that quad core and a bigger screen are questionable. He is more likely not going to get a new PC some time down the road or upgrade the videocard, so I was thinking a smaller screen would work best. Not only that, would going Quad Core be benefital in the long run? Right now the E8400 surpases the Q6600 by a long shot in FPS in games..... btw, no overclocking.