If you don't need huge graphics acceleration (games, video editing), go with an Intel integrated graphic Processor. It will save you much battery life compared to a dedicated graphics. An Intel i5 would be recommended I guess.
If you really want to use it outdoors, you'll want a good (bright + contrasty), matte display.

As enrolled student, you should qualify for "education discount", Lenovo offers this, but also check local stores.

I bought my Thinkpad here, they offer ex-demo, 2nd hand and B-class models. They have spare keybords in ALL languages, so you can choose a laptop and then the keymat:
http://www.nbwn.com/advanced_search_...eywords=polish