My Second Build!

[YooNiBaLL]

Hello everyone, after a long hiatus from XS after a successful first build, I couldn't resist the urge to build a new and more beastly system .. Well here's my current plan so far:

Budget: None as of now
Theme: Black/White
Uses: Everyday Use/Overclocking/Gaming/Hobby

Purchased Main Components:

CaseLabs Case STH10

ASUS Maximus V Extreme Z77 E-ATX Motherboard

Intel Core i7- 3770K 3.5 GHz

2 EVGA 680GTX PCB

Crucial 512GB SSD

Corsair Dominator Platinum 16GB 1600MHz

Corsair AX 1200 (Planning for future additions of GPU)

Watercooling Products for SINGLE loop:

1 XSPC Raystorm CPU Block

2 Heatkiller GPU Block

1 XSPC D5 Dual Bay Reservoir/Pump Combo

2 XSPC RX 480 Radiator

16 Yate Loon D12SM-12

10ft PrimoFlex Pro LRT 3/8 Tubing

Silver Bezel Wire, .999 Fine Silver 12" strip

6 Compression Fittings 3/8

2 SLI fittings

1 Rotary fitting

Feser Aqua Ultra Pure Non-Conductive Water


My questions are:

1) Will those Yate Loon fans work well with two RX 480s? I plan on getting another 680.
2) Where's the optimal locations for my radiators? I was planning to have them on the sides of the bottom to draw in colder air through the radiators. I will most likely have exhaust fans on the top for the rising hot air.
3) Are the two radiators listed above adequate to plan ahead for an extra 680 in the loop?
4)Should I try running things in a particular order? I was planning to put them in this order: Pump/Reservoir => 2xRAD => CPU => GPU
5) Is that D5 Pump going to be sufficient for the length of the loop?
6) Would it be okay to add distilled water with that Feser fluid?
7) All the parts I purchased are copper, but I don't think the fittings are and I'm worried about corrosion in the long run. What about that silver? Would it cause corrosion?
8) Should I just run two separate loops?

Thanks guys for taking the time to read this! Hopefully all you guys can chime in with any constructive criticism/advice/feedback!