Unless your doing a Mini ITX system you would be better off going with a good motherboard and buying an internal PCI-E WiFi card, but you asked for some suggestions.
CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.98 @ NCIX US)
Motherboard: ASRock Z97 Extreme6/ac ATX LGA1150 Motherboard ($153.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($59.98 @ OutletPC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($48.75 @ OutletPC)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($149.20 @ Newegg)
Case: Azza SIRIUS ATX Mid Tower Case ($40.98 @ Newegg)
Power Supply: Corsair CX 500W 80+ Bronze Certified Semi-Modular ATX Power Supply ($34.00 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.89 @ OutletPC)
Total: $682.76
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-29 19:38 EDT-0400
CPU: Intel Core i5-4460 3.2GHz Quad-Core Processor ($176.99 @ SuperBiiz)
Motherboard: Asus Z97-PRO(Wi-Fi ac)/USB 3.1 ATX LGA1150 Motherboard ($233.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($59.98 @ OutletPC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($48.75 @ OutletPC)
Video Card: Sapphire Radeon R9 280 3GB Dual-X Video Card ($149.20 @ Newegg)
Case: Azza SIRIUS ATX Mid Tower Case ($40.98 @ Newegg)
Power Supply: Corsair CX 500W 80+ Bronze Certified Semi-Modular ATX Power Supply ($34.00 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($18.89 @ OutletPC)
Total: $762.77
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-29 19:41 EDT-0400