Is this a build primarily for gaming, rendering, editing, ...?
How much storage space do you anticipate using, or how much are you using now (your link under hard drive is deactivated).
Do you need any additional hardware? keyboard/mouse/monitor.
$1,500 (+/- 250-300) is a nice range to be in and gives you a lot of options depending on what the build is for.
Will post up some suggestions once you've identified the end purpose of the build.
*Edit - Here is a fairly generic gaming setup with the option of future upgrades:
Case + OS: $220 NZXT Phantom + Windows 7 Home Premium 64-Bit OEM
PSU + GPU: $684 1050W Corsair HX1050 + MSI GTX 580 Twin Frozr II/OC
CPU + MB: $375 Intel i5 2500k + Asus P8P67 Pro
CPU Cooler: $42 Corsair CAFA70
Thermal Paste: $7 Tuniq TX-2
RAM: $70 8GB G.Skill Ripjaws X 1600 CAS8
HDD: $60 1TB Samsung Spinpoint F3
SSD: $110 60GB OCZ Agility 3
ODD: $20 Sony Optiarc 24x DVD/CD Burner, LightScribe Support
Total = $1,588.
-$70 in rebates, and if you sign-up for ShopRunner trial shipping is free = $1,518.
The motherboard will support a 2nd GTX 580 and the power supply has the juice to run it.
Also, the CPU is overclockable for extra performance and the aftermarket cooler will keep it cool.
Please read through the thread thoroughly before responding.
Nobody wants to read a wall of text, formatting is your friend.
i5 3570k | 8GB G.Skill 1600MHz | R9 290 | SeaSonic 750X