i7-4790k custom watercooling

i want a multi purpose pc, i have no budget (IF i really really need to put a budget that would be around 15k US $) and i want this to be a Really high end game/work machine and i want to go custom cooling i found this awesome case: the thermaltake core v71 and all of his radiator madness and i say HEY!! this is it! with all dem points for radiators and stuff i want to go with

CPU: Intel Core i7-4790k
Motherboard: Asus Republic Of Gamers Maximus VII Formula
Ram: 32GB of DDR3 2400mhz Corsair Dominator Pro
Storage: Ocz Revo Drive 350 960 GB, Seagate 6TB 128MB cache
Graphics Cards 2x Titan Z in sli
Case: Thermaltake Core V71
PSU: Corsair Ax1500i
Sound Card Republic Of Gamers Xonar Phoebus 7.1
Keyboard: Razer BlackWidow ultimate stealth edition
Mouse: Razer ouroboros
Headphones: Razer Tiamat 7.1
Lightning: Red Led Strips
Monitor: Asus PB278Q or the ezio FlexScan SX2462W or the Dell UltraSharp U3011: i need good color reproduction and consistency good color depth a good view angle and i want them configured in Nvidia surround for better multitasking when i will be working
Graphic tablet: Wacom Cintiq 24HD: this ''little'' tablet made my life soo easy when it comes to logos and drawing custom desings

Radiators and other loop components:

Top: 1x 420mm ( XSPC EX-420 plus 6 Corsair SP140 Red)
Front: 1x 420mm ( XSPC EX-420 plus 6 Corsair SP140 Red)
Bottom 1x 240mm (XSPC EX-240 plus 4 Corsair SP120 Red)
Back: 1x 120 in the back (XSPC EX-120 plus 2 Corsair SP120 Red)
Ram Waterblock: Xspc Memory Waterblock
Cpu Waterblock :Xspc Raystorm CPU waterblock
Graphic card Waterblock: EK-FC Titan Z full cover waterblock x2
Compression fittings: Xspc G 1/4 black
SLI fittings: Koolance Dual VID black
Reservoir: XSPC Twin D5 dual bay pump/reservoir combo
Tubing: uv red tubing primoflex
Fan Splitter: a metric TON of PWM fan splitters


the main purpose of this Rig is gaming and graphic design, photo editing as well some mid to light 3d work some mild video editing for my future Gameplay youtube channel i dont have a color scheme but given the color of the parts i'll say it's red and black

Games i want: Crysis 3, Battlefield 4, Metro last light, Tomb raider, Thieft and a loooong ETC mainly all of them at max settings and i dont care about the AA or the TXAA or anything of that

Programs i need: Photoshop cs6, Illustrator, Corel Draw, AutoCAD and Sony Vegas Pro 13

About overclocking: im planning to do a mild to medium overclock to both the cpu and the gpu they said that the devil's canyon could reach 5 ghz with air.. so i expect to reach at very least 4.8 ghz just to keep it safe about the titans: lets se how much i can squeeze out from them i read that with the EVGA precision x i could set the power target at 120% the temp target at 95° and the gpu clock offset at 75mhz and all that could give me an hefty 1.074 mhz so i want to test this .. so hell yeah you can bet your butt i'll overclock

Questions:
my question here is: destiled water or coolant? how much tubing would i need? how much coolant will i need? also need help with the routing of the loop in general i planned to go res/pump - top radiator - crosschill (the mosfet water block of the motherboard)- cpu - back radiator - gpu - bottom radiator - ram - front radiator - and back to the res/pump again

also tips n trick would be highly appreciated

soon build log! when the parts arrive i will take some pictures and i'll leave the link to the post here somewhere xD thanks for the answers!!