cesg67 :
Thanks for the advice! And many thanks for the work you put there! I do not live in the US, but i'm assuming prices here are somewhat similar... I have many people telling me to go Ryzen, For 40 bucks, you think it's worth? About the cooling, i read alot about water/air cooling and it seem to have the same performance, or vary similar, but with a hell more noise... not sure never used water radiator before, what's your opinion? I dont know the diference betwin the m.2 but the price is way beter so thanks! so last question if you were to stick with intel, what would you change?
You're welcome! Definitely worth it to go with Ryzen due to better price/performance, upgradability, and the specific purpose of your PC. As of today, the i5's and the i7's have lowered in value due to competition. The i7-7700K is still a good gaming CPU, with 4-core/8-thread (which games are already taking advantage of). But the Ryzen 7 1700 (8-core/16-thread) has better value and, arguably (depending on specific games), have slightly similar performance. Since you mentioned you want to game AND stream/edit, the higher core/thread count would be to your benefit. Gaming as far as these CPUs are concerned, doesn't have that wide a performance gap, as compared to GPUs, since the more important and noticeable difference in FPS is highly dependent on the GPU.
As for liquid (AIO) vs air cooling, AIOs can easily be matched in performance by good-quality air coolers (such as the ones mentioned above). Picking one over the other is also a matter of preference. AIOs have the advantage of keeping the interior "cleaner" due to non-bulky heatsink and, with larger/wider radiators, have better heat dissipation due to the larger surface area compared to air coolers. Disadvantages of AIOs are lesser price/performance, more power consumption and noise (fans + pump), maintenance and the *possibility* of leaks (it does happen - and if and when it does, keep fingers crossed that no other components would be damaged).
Now, if, say, you really prefer an Intel platform, this would be my modifications to your original parts list to lower the costs (but still maintain the performance level you envision):
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel - Core i7-7700K 4.2GHz Quad-Core Processor ($326.47 @ OutletPC)
CPU Cooler: be quiet! - Dark Rock 3 67.8 CFM Fluid Dynamic Bearing CPU Cooler ($64.88 @ OutletPC)
Motherboard: MSI - Z270 SLI PLUS ATX LGA1151 Motherboard ($133.88 @ OutletPC)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory ($135.88 @ OutletPC)
Storage: Samsung - 960 EVO 250GB M.2-2280 Solid State Drive ($127.88 @ OutletPC)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($66.89 @ OutletPC)
Video Card: EVGA - GeForce GTX 1080 Ti 11GB SC Black Edition Video Card ($714.98 @ Newegg)
Case: NZXT - S340 (Black) ATX Mid Tower Case ($54.98 @ Newegg)
Power Supply: EVGA - SuperNOVA G2 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($79.89 @ OutletPC)
Total: $1705.73
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-07-03 05:51 EDT-0400
*Note that I would still recommend the Ryzen build over the Intel build above.