the CPU/mobo is a good combo, not too much power needed and gives you room to play if you want.
the GPU gives you the room to play some games at decent setting, if you decide you want to, but it's not that costly.
the ram is DDR2, pretty much todays standard, 667 is a good "middle of the road" type of ram DDR2 800 is good but usually on the pricey side... but the 667 gives you the speed you want for basic apps.
the PSU gives you the option to expand of you want and still have room to work with, plus Antec is a good brand in general
the HDD is a 16MB cache 250GB.... PLENTY of room, and the speed to match...
the rest is preference... but I basically choose those parts for:
basic system apps
good quality parts
Dell 4K S2817Q / Logitech Z-680 / Func MS3 Mouse / Corsair K70
NZXT Source 530 / i7-3770K / Corsair H100 / ASRock Z77 Extreme4 / SoundBlaster Recon3d
Samsung 850 PRO 512GB SSD/Seagate 1TB/2TB/WD 2TB
4x4GB Corsair Vengeance 2133 / PNY GTX 980 ti/ Seasonic M12II 850W