What parts for a multimedia computer?

[fourmaples]

I am looking into building my own computer. I currently have a 13" i5 MacBook Pro, but it's dying and was far too slow for my purposes to begin with.

Requirements:
I will be using this new computer for video and audio editing, image manipulation (Gimp), and moderate gaming (Minecraft w/ standard to high settings, Portal, etc). It will be at least dual boot (Windows 7 or 8, Linux, and possibly OS X). Also, I will be using two monitors.

Budget: $1000 (I'm willing to go $1500 if necessary).

Any suggestions on what kind of parts I need/what specs I should be looking for? I've heard AMD CPUs are much cheaper than Intel, but that the performance isn't as good. Would an AMD CPU work for my purposes?

Thank you!
fourmaples

 

[sammy sung]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($309.99 @ Newegg)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($89.99 @ Amazon)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard ($139.98 @ OutletPC)
Memory: PNY XLR8 16GB (2 x 8GB) DDR3-1600 Memory ($132.99 @ Best Buy)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Drive ($128.98 @ OutletPC)
Storage: Samsung 840 EVO 250GB 2.5" Solid State Drive ($128.98 @ OutletPC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($54.98 @ OutletPC)
Video Card: Zotac GeForce GTX 970 4GB Video Card ($327.85 @ B&H)
Case: Corsair 300R ATX Mid Tower Case ($58.99 @ NCIX US)
Power Supply: Antec High Current Gamer 520W 80+ Bronze Certified Semi-Modular ATX Power Supply ($74.99 @ Mac Mall)
Optical Drive: Asus DRW-24F1ST DVD/CD Writer ($14.99 @ Amazon)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $1552.69
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-11-09 15:48 EST-0500