1st time build question

Hello to everyone, i have a couple of question about computer i am building. First i will give the list of things im buying or have bought then i will ask the questions.


motherboard-
ASUS Rampage IV Extreme-DONE

cpu-
Intel Core i7-3820

cpu thermal compound
Arctic Silver 5 High-Density Polysynthetic Silver Thermal Compound AS5-3.5G - OEM-DONE

cpu cooler-
COOLER MASTER Hyper 212 EVO-DONE

ram-
CORSAIR Vengeance 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 Desktop Memory Model CMZ32GX3M4A1600C9

gpu-
x2 ASUS HD7870-DC2-2GD5-V2

ssd storage-
Intel 330 Series SSDSC2CT240A3K5 2.5" 240GB SATA III MLC Internal Solid State Drive (SSD)

hdd-
Western Digital WD Black WD5003AZEX 500GB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

optical drive-
ASUS BW-12B1ST

power suply unit-
CORSAIR AX760i

soundcard-
ASUS Xonar Essence STX Virtual 7.1 Channels 24-bit 192KHz PCI Express x1 Interface 124 dB SNR / Headphone AMP Card

wifi-
ASUS PCE-AC66

fans-
COOLER MASTER Megaflow 200 R4-LUS-07AR-GP 200mm Red LED Case cooler

COOLER MASTER R4-MFJR-07FK-R1 200mm MegaFlow 200 Silent Fan

COOLER MASTER SickleFlow 120 R4-L2R-20AR-R1 120mm Silent operation Red LED case fan

keyboard-
Microsoft SIDEWINDER X4

mouse
Logitech G9x Black Two modes scroll USB Wired Laser 5700 dpi Gaming Mouse

monitor-
Asus VH238H

cpu case-
Cooler Master HAF Xm-DONE

speakers-
Corsair Gaming Audio Series SP2500

The items i have DONE next to are the items i have bought already, however i was wondering if my power supply is good enough for my build? and if anything else in my build might appear to be weak. Any response would be greatly appreciated.