Need help choosing a new PC build

[Katrix]

So, my sisters old PC just broke down, and she's thinking if buying the PC I have at the moment. That leaves me needing a new PC, something I've been thinking of buying for a while now. Currently I'm looking at buying a customizable prebuilt PC from a store here in Norway, as that's a bit cheaper that buying all the parts myself. However I'm still a bit unsure about the builds I have narrowed it down to and would love some advice choosing the builds, or different components for them. As I live in Norway, I pay in NOK, not in USD, so that's also what I've listed all the prices as. If you're curious roughly what I would have to pay to bring something I have to pay for in USD up here, just multiply the price by 10. Besides each component I have listed the standalone price for it. If you want to see what choices I have, just check the link and try navigating a Norwegian website :P.

Komplett Gamer Xtreme i270	Komplett Gamer Xtreme i230	Komplett Xtreme - MSI Edition
Network card ASUS PCE-AC56 AC1300 450kr Chassis Phanteks Eclipse P400 900kr Power supply EVGA GQ 750W 1000kr CPU Intel Core i7-7700K 3400kr Cooling Corsair Hydro Series H60 700kr Motherboard MSI Z270 Gaming Pro 1500kr Memory HyperX Fury DDR4 2666MHz 32GB 4x8GB CL16 Black 3200kr GPU MSI GeForce GTX 1080 Armor OC 6600kr SSD Samsung PM961 SSD 256GB 1400kr HDD Seagate Barracuda 3TB 3.5'' 1000kr OS Windows 10 Pro 64-bit Nordic + English 2250kr To pay 21460kr	Network card ASUS PCE-AC56 AC1300 450kr Chassis Phanteks Eclipse P400 900kr Power supply EVGA GQ 750W 1000kr CPU Intel Core i7-7800X 4000kr Cooling Corsair Hydro Series H60 700kr Motherboard MSI X299 Gaming Pro Carbon 3500kr Memory HyperX Fury DDR4 2666MHz 32GB 4x8GB CL16 Black 3200kr GPU MSI GeForce GTX 1080 Gaming X 6500kr SSD Samsung PM961 SSD 256GB 1400kr HDD Seagate Barracuda 3TB 3.5'' 1000kr OS Windows 10 Pro 64-bit Nordic + English 2250kr To pay 25989kr	Network card ASUS PCE-AC56 AC1300 450kr Chassis Cooler Master Masterbox 5 MSI Edition 850kr Power supply Corsair CX750M, 750W 930kr CPU Intel Core i7-7800X 4000kr Cooling Corsair Hydro Series H60 700kr Motherboard MSI X299 Gaming Pro Carbon 3500kr Memory HyperX Fury DDR4 2666MHz 32GB 4x8GB CL16 Black 3200kr GPU MSI GeForce GTX 1080 Armor OC 6600kr SSD Samsung PM961 SSD 256GB 1400kr HDD Seagate Barracuda 3TB 3.5'' 1000kr OS Windows 10 Pro 64-bit Nordic + English 2250kr To pay 25086kr

[Tenko]

If you can wait, AMD's Threadripper is coming out soon-ish and is showing to be very promising (inb4its just another athlon)
Otherwise, I would recommend just getting 1TB SSD instead of SSD+HDD combo if you can spare the extra dollars (or kr)
Don't know if you really need 32GB of RAM; I personally never actually max out the 16 I have, but depends if you leave like 20 billion things open all at once.