A good intel build?

Solution
In 6-7 years time the i7 will be just as outdated as the i5.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor (£247.14 @ Aria PC)
CPU Cooler: RAIJINTEK THEMIS 65.7 CFM Sleeve Bearing CPU Cooler (£20.16 @ Aria PC)
Motherboard: MSI Z97-Gaming 3 ATX LGA1150 Motherboard (£91.29 @ Ebuyer)
Memory: Kingston HyperX Fury Red 8GB (2 x 4GB) DDR3-1866 Memory (£32.79 @ Amazon UK)
Video Card: Gigabyte GeForce GTX 980 Ti 6GB WINDFORCE 3X Video Card (£491.93 @ More Computers)
Case: Phanteks Enthoo Pro M ATX Mid Tower Case (£50.54 @ Aria PC)
Total: £933.85
Prices include...
Your best hope for future proofing is the latest technology generally but your budget will contradict your limits. Ive recently purchased an i7 5930k at a crazy good price without diving into that story it leads us to the 2011-v3 LGA socket type. This x99 motherboard platform will give you access to the new NVME bootable SSD technology, DDR4 Memory, USB 3.0/3.1, and PCIE 3.0 x16 lanes with multi GPU config. options. The pieces arent the cheapest and i wouldnt call this a true budget build path myself. I honestly didnt need to upgrade just yet but im rocking an original i5-750 OC'd to 3.8ghz constant with a gtx 980 to keep it company which is more than enough for 1080p...tho im lacking usb 3.0, sata 3, pcie 3.0, and the list seems to go on forever on paper.
 
In 6-7 years time the i7 will be just as outdated as the i5.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor (£247.14 @ Aria PC)
CPU Cooler: RAIJINTEK THEMIS 65.7 CFM Sleeve Bearing CPU Cooler (£20.16 @ Aria PC)
Motherboard: MSI Z97-Gaming 3 ATX LGA1150 Motherboard (£91.29 @ Ebuyer)
Memory: Kingston HyperX Fury Red 8GB (2 x 4GB) DDR3-1866 Memory (£32.79 @ Amazon UK)
Video Card: Gigabyte GeForce GTX 980 Ti 6GB WINDFORCE 3X Video Card (£491.93 @ More Computers)
Case: Phanteks Enthoo Pro M ATX Mid Tower Case (£50.54 @ Aria PC)
Total: £933.85
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-16 23:14 GMT+0000
 
Solution
depends on what you mean by 'future proofing' if you mean playing games at max specs 6 years out then maybe you'll want to have started with an i7 and coast out on that but at the same time the i7 doesn't really do much extra game wise. So an unlocked i5 will be perfectly fine unless you are being super anal about it.

That GPU you have you'll definitely be throwing out and replacing with something newer down the line if keeping up with games at high settings is your goal.

As for me I'm still rocking my i5-2500K which is 4 going on 5 years now. Still going strong with no problems from my perspective.