$500 "mobile" gaming computer, your opinion?

Hello all,
this is a quick build I'm doing for a friend(free of charge of course). This is his first gaming computer hes getting and wanted it to be easily transportable. I got to ordering all the parts today and I think this is a huge bang for buck machine. However, I wanted to know what others thought. The specs are listed below and thanks for any replies
Specs:
Case:NZXT Vulcan Gaming Enthusiast mATX Computer case
CPU:AMD Athlon II X4 630 2.8Ghz AM3 CPU
Mobo:ASUS M4A785T-M AM3 AMD 785G HDMI Micro ATX AMD Motherboard
RAM:G.SKILL Ripjaws 4GB(2 dimms) DDR3 1600 Memory
Hdd:WD Caviar Black 500GB Serial ATA HD 7200/32MB/SATA-3G(we were going to do a 1tb samsung but we both agreed that 1tb is overkill for him)
GPU:Like new Asus GeForce GTX 260 core 216 graphics card ($90 on eBay)
PSU:Thermaltake TR2 W0388RU 600W ATX 12V v2.2 Power Supply
DVD:recycled dvd drive
total cost $495 usd
I also ordered 2 extra 80mm fans for a 4 case fan total. I did want to take advantage of newegg's black friday deals and get the lian li PC-K62 but he liked the looks of the vulcan better( ) and the portability feature.
Again thanks for any replies to this thread.

Hmm 1st negative on the TT TR2 line of PSUs
http://www.hardwaresecrets.com/art [...] view/902/9

Then for the $$ one could actually, via carefully picked out parts/combos land a GTX 460 1GB/256 bit based little monster hehe

$444AR

Oh, I actually just saw the psu you referenced is a different line of power supplies, the tr2 rx, not the tr2. I have worked with the tr2 430w model(most reviewed psu on newegg) 2 times before so I dont expect there to be a problem.

hmm...that is quite interesting. Ive only used the 430w tr2 for home pcs using onboard video. I always go corsair or seasonic on high end and antec and ultra for budget builds, with the occasional thermaltake or other "big" brand. the parts are already ordered so if it gives me any trouble I will just get a refund. Thanks, may have saved me a system or 2 down the line there!