Hey! I'm also going for a computer related major in college (IT or CS) and I've had a few talks with some friends who are in the field, so I'll pass some stuff on to you.
I myself am getting the 15 inch, 2.2 GHz, 1920 x 1080 glossy,8 gb, and 500gb 7200 RPM.
I got the higher resolution since I don't really want an external monitor, and I wouldn't be able to upgrade the resolution in the futurue.
2.3 GHz for an extra $250 would be too expensive,and 2.2 would get the job done just fine.
The memory is perfect, you'll be able to handle pretty much anything thrown at you and won't have to worry upgraded for a good while.
I choose the 500GB 7200 RPM since it's faster. The SSD currently in the store is way too expensive, I'm personally going to wait until SSDs are cheaper and then I'll be able to replace it.
Hope this is helpful