New Build for College: Need Advice

Have a look at the sticky at the top of the forum, the one about asking for build advice.

Before we can say what you need, we have to know how you will use it. You don't need that much power for your build as listed, a good PSU with about 40 amps 12V would do just fine.... possibly 50 amps if the card and your CPU will be overclocked.

If you want a small case you should get a smaller MB, then you can get something lighter and easier to fit in small spaces.

This would be my usual *Pingius Cattus gaming rig for portability hehe Usually i hit the shoebox/cube LANparty boxes though but this NZXT looks interesting so may give ya some ideas hehe

*Fat Cat in Latin

You need to change your RAM to Dual Channel - the RAM you picked is Tri Channel and only works with i7 and X58 motherboads.

I would suggest G Skill Ripjaws 1600mhz CL7 - $114.99 + $2.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

or the G Skill ECO RAM which runs at lower voltage but same specs - $115.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Due to the Ripjaw no longer being free shipping, the ECO actually works out cheaper instead of more expensive which is was previously. You do not need more than 4gb of RAM for gaming, I doubt you will need more RAM at all before the time you replace the system, but if you ever do feel the need you can always pick up a few more gb in the future, by the time you feel the need for more DDR3 RAM will be cheaper

I think that is the only required change. I would suggest swapping the HDD to the Samsung Spinpoint F3 - $69.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

In addition to being cheaper it is the best performing HDD.

I cannot help with case as I do not like to go with micro boards or small cases - personally I think a typical sized mid tower is easy enough to carry - they aren't heavy and I have long arms so carrying is easy enough, so the usual HAF 922 type case would be my recommendation
Also, given that you have gone with a great mobo which allows XFire, if ever you decide to do it you want a case that can handle 2 5870s inside it without them being crammed in.

750W is plenty and allows you to XFire in the future if you choose to. Also, if it is the PSU I am thinking of it has a good deal on Newegg so worth getting. No need for 850W, 750W is more than enough for your system and XFire

change to a Asus P7P55D-E Pro

+1, its the cheapest board that sorts out the PCIe lane bottleneck issue with usb3

Oops, I thought the mobo picked was the pro. The other two are correct, the Asus P7P55D-E Pro is the perfect P55 board