Cheapest Intel i7 6700k and 6700 build with 16gb RAM, 250gb-500gb SSD and a Motherboard with a minimum of two USB 3.1 ports?

[pollee]

I would also need a:
Case
PSU
DVD read/writer

I want a motherboard with the ability to crossfire and a PSU that can handle two RX490s when they come out.

It's a UK build.

I'm not sure if I should go with Intel i7 6700k or 6700. If the price difference isn't that great I might go with 6700k but seeing both builds and their price will help me decide.

 

[BadActor]

Figure 40 pounds less if using the i7 6700.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor (£305.99 @ Amazon UK)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£31.49 @ Ebuyer)
Motherboard: ASRock Z170A-X1/3.1 ATX LGA1151 Motherboard (£90.36 @ More Computers)
Memory: G.Skill Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory (£84.98 @ Novatech)
Storage: OCZ TRION 150 240GB 2.5" Solid State Drive (£54.98 @ CCL Computers)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£41.62 @ Amazon UK)
Case: Deepcool TESSERACT SW RED ATX Mid Tower Case (£29.99 @ Ebuyer)
Power Supply: EVGA SuperNova B2 850W 80+ Bronze Certified Semi-Modular ATX Power Supply (£87.93 @ Amazon UK)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer (£14.99 @ Novatech)
Total: £742.33
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-08-04 08:34 BST+0100