Two options.
1 - i7-5820K + GTX 970:
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CPU: You must login or register to view this content. ($373.95 @ SuperBiiz)
CPU Cooler: You must login or register to view this content. ($59.99 @ NCIX US)
Motherboard: You must login or register to view this content. ($184.99 @ Amazon)
Memory: You must login or register to view this content. ($182.98 @ Newegg)
Storage: You must login or register to view this content. ($64.95 @ SuperBiiz)
Storage: You must login or register to view this content. ($53.99 @ SuperBiiz)
Video Card: You must login or register to view this content. ($338.99 @ NCIX US)
Case: You must login or register to view this content. ($117.99 @ SuperBiiz)
Power Supply: You must login or register to view this content. ($75.99 @ SuperBiiz)
Total: $1453.82
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-03-05 04:55 EST-0500
2 - i5-4690K + GTX 980:
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CPU: You must login or register to view this content. ($224.95 @ SuperBiiz)
CPU Cooler: You must login or register to view this content. ($34.99 @ Newegg)
Motherboard: You must login or register to view this content. ($114.99 @ SuperBiiz)
Memory: You must login or register to view this content. ($50.98 @ Newegg)
Storage: You must login or register to view this content. ($64.95 @ SuperBiiz)
Storage: You must login or register to view this content. ($53.99 @ SuperBiiz)
Video Card: You must login or register to view this content. ($532.00 @ Directron)
Case: You must login or register to view this content. ($117.99 @ SuperBiiz)
Power Supply: You must login or register to view this content. ($75.99 @ SuperBiiz)
Total: $1270.83
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-03-05 06:33 EST-0500
If your friend is only gaming at 1080p, I would go with the first build. The GTX 970 should be MORE than enough for 1080p gaming. The GTX 980 just isn't worth it to get right now with its current price, especially if your friend is only gaming at 1080p. Not only that, but by going with a single GTX 970, your friend will be able to get an X99 build. I hope you can do some Google'ing to figure out why X99 is a good thing.
If gaming at a resolution higher than 1080p, get the second build and add a second GTX 980 later in the future. The GTX 970 has RAM allocation issues, so gaming at resolutions higher than 1080p with the GTX 970 is not ideal.