spookr

Heres a good benchmark video to check out on some of the recent CPU's released.
In a nutshell, the 8700k is great, and if you feel like its worth the price difference over the 7700k or even the 8600k, then i wouldnt advise you against it. The 7700k is known to run pretty hot even on water, where the 8th gens can as well, but from what ive seen is that they can handle temps a bit better especially with stable overclocking. Averages ive seen in OC are in the 5-5.2GHz range which is pretty impressive. The 8700k will allow you much more headroom for other tasks if you decide you want to record a game, or stream, or any other multitasking workloads you throw at it, and could potentially be a bit more future proof in having 2c/4t more for when games can utilize them more. Now if the money part is another issue, in this video you can see even the 8600k matching, beating, or trading blows with the 7700k. So in terms of price for performance, id say the 8600k would be a great recommendation as well as you can also overclock it to the 5-5.2 range.
You wont be unhappy with either of the 3 as they all will perform at well over acceptable levels, but in terms of longevity i would advise to wait a bit longer for the 8th gen. It all comes down to what you feel is best bang for the buck, or if its not worth it to wait. Hope this helps

it'll work just fine, remember to look out for warning signs of failure and make regular backups of important files.

If RGB lighting is important, stick with the Asus Strix gpu.
 
Any unit failure in a RAID 0 array loses everything on all drives in the array.  If the array is being used as boot, system, and programs, without a good backup you would have to reinstall everything from scratch, i.e. as if it was a new disk. 
 
If the reason for the RAID 0 array is to create a single larger volume, don't bother. You can use Windows 10 library feature to make storage appear monolithic. Better yet, if the budget allows get a larger ssd. If the reason for the array is to improve performance, ssd behaves a little differently than hdd in RAID 0 arrays. In a general purpose system the added performance will not really be noticeable.
 
Overall a nice build.

2133 ram?
 
no.

RAID 0, without a proper, complete, backup, is a terrible idea, unless you're okay with losing everything.
Swap out the memory for this:
https://au.pcpartpicker.com/product/MYH48d/corsair-memory-cmk16gx4m2b3000c15
 
Swap out the GPU for something like this:
https://au.pcpartpicker.com/product/bd2rxr/gigabyte-geforce-gtx-1080-ti-11gb-aorus-xtreme-edition-11g-video-card-gv-n108taorus-x-11gd

That is not in USD right. CAD? Because everything seems overpriced if its in USD.
EDIT: Its Australian Dollar.

Beautiful  Maybe upgrade that ram to 32gigs but thats not necessary. 

With $3000 I'd expect faster memory (although I don't know how well that RAM overclocks if at all.)
 
Raid 0 combines 2 (or more) drives into one combining the capacity and speed of both. Overall with 2 reliable new(ish ) drives you should be okay with raid 0.

Higher clocks, better performance, at a lower price  
Everything on the SSDs would be gone, you'd have to reinstall everything from scratch. Anything not on those drives would be fine though.