Intel Core I7-4790K at 4x4.5 GHz
Antac Kuhler H20 950 Water Cooling
Asus Maximus VII Ranger
2 x Kingston 8GB DDR3-2400 HyperX Beast XMP
Samsung 840 EVO 500GB SSD
Asus GeForce GTX 780Ti OC 3GB
Seasonic 750RT 80 Gold powersupply
Asus ROG SupremeFX 2014 sound card
Asus 24x DVD-burner
Couple of things (actually lots)
No point on getting the Devil's Canyon or the K series chips unless you are going to overclock them, as much as 4.5Ghz is nice the i7 series is pretty much the end point for processing power. Literally save yourself 50 bucks and get a real sound card like a Soundblaster.
Watercooling won't be needed unless again you are overclocking. A Coolermaster 212 EVO is the best air cooler for quiet performance.
Ram, 2400mhz you aren't going to see the huge performance jump you are expecting with that price plus this requires a CPU overclock (base clock for haswell is 1866) which will stress out the cpu even more for this high of a clock. 2133 is the highest ill ever go but for simplicity sake stick with base 1600 or 1866, spend your money on lower latency chips.
EVO drives, you said you want something future proof? this ain't it. The EVO series are the fastest SSDs on the SATA market but that comes at a cost as the new chip fabrication being used has a lower writing cycle. Im not saying you would burn it out fast but these are definitely not designed to last you for the years. Recommend getting the PRO series which are a bit slower but will last alot longer. Also i would pickup some Terabyte hard drives too, they are now going 60 bucks and best way to store media files without clogging the SSD (trust me, i try to use much of my SSD for games and programs and keep all my videos and stuff on my hard drives, save space for the important stuff that needs speed)
Now for the video card. Keep it, the 780TI is best card (compared with similar performance the AMD 290x) to buy for the performance and the buck. Titans are garbage and not worth the price. You want performance to last you the decade you gotta spend and the GPU is the biggest chunk of cost for futureproofing. If at some point you wanna do 4K or extreme multimonitoring just get another one for SLI, would need a bigger PSU but still better than buying Titans.
thats it for my side.