New Build buying today please review.

Hi Im buying this tonight probably or at least most of it so if you guys could please review this and see if its ok let me know.

Uses: gaming some photoshop.
monitor: 1920 x 1080
parts not needed: keyboard, mouse, OS, speakers.
purchased already
i5 2550k.
lian li case.

conisdering/buying now
PSU Rosewill HIVE Series HIVE-750 750W $89.99+additional 20% off rebate code
Mobo/ram combo ASRock Z77 Extreme4 LGA 1155 & Kingston HyperX 8GB (2 x 4GB) PC3-12800 (1600MHz) $174 with an extra 15% subtracted off of ram with rebate code.
HD SAMSUNG Spinpoint F3 HD103SJ 1TB$89.99 after $20 rebate code
gfx MSI R7870 Twin Frozr 2GD5/OC Radeon HD 7870 GHz Edition $351 after 5% off rebate code
CPU Cooler COOLER MASTER Hyper 212 Plus $29.99
dvd drive ASUS 24X DVD Burner $18.99

Am I missing anything? Or would something be better to switch out with?
I went with the rosewill PSU because it was 20% off, modular and also decent reviews..i had really hard time deciding on psu.

I will overclock eventually, and perhaps crossfire in the future although atm that isnt highly likely. so thats why im not spending more money on higher wattage psu.