Help me out( Constructing my desktop)

Was wondering if I only play at resolution of 1280 highest so, i was wondering 800$ for a core 2 duo would be good enough for me to last for around 5 years? Not really a high end user but gaming is priority and i don't OC so should i go with this or wait for i5 or any current available part i could get to build? if the build i'm going below is fine could you reckon me a monitor for that resolution.

CPU: E8400
GPU 9800GTX
RAM 4 2x2 DDR 2 1066
600 Watts
Black Caviar 500GB
Gigabyte P45 UD3R Mobo

i wouldn't expect a Core 2 Duo to last 5 years. it won't be very long until games start needing at least a Core 2 Quad to run smoothly. in 5 years time, the Core 2 Duo will probably be as outdated as the Pentium 4 is now.

i wouldn't expect a Core 2 Duo to last 5 years. it won't be very long until games start needing at least a Core 2 Quad to run smoothly. in 5 years time, the Core 2 Duo will probably be as outdated as the Pentium 4 is now.

broken_bass_bin

I might wait for core i5 and if is a good leap over a core 2 duo i might get it and use a gtx 260 216 core