Verification for first gaming PC

Approximate Purchase Date: In about a month

Budget Range: $700

System Usage: Mostly gaming. Obviously internet surfing and media playing such as YouTube. And some photo/video editing in PhotoShop/After Effects.

Parts Not Required: keyboard, mouse, optical drive, monitor, speakers and OS(Windows 7 64-bit).

Overclocking: Yes

SLI or Crossfire: Don't plan on it (idk what those are lol)

Monitor Resolution: unsure lol, is an 18.5 inch i'm getting from my friend for $100, has no hdmi port if that helps

Additional Comments: I don't want this built for me lol, all my parts are here. What I would like to know is:

Can I safely OC my CPU a bit with this PSU, or do I need a bigger PSU? (I did newegg's PSU calc and it said 440W).

Also, my Mobo says RAM can go to 1600(OC) and the RAM I'm picking is 1600, so it will bottleneck my RAM at 1333 until I OC my RAM to 1600 in the Bios correct?

The last thing I want to double check: I'm pretty sure everything will fit in this tower, anyone think I will have any problems fitting everything in this tower? Lastly, any suggestions? (I am on a budget lol)

Thanks for taking time out of your day to read this!