need help with customizing my MacBook Pro 15"

Ight, i'm going to order my Macbook pro today, but I can cusomize it a bit.

now I would like some help of witch better cosomisations are wurth the extra money.

Now... most important task for the computer is offcourse schoolwork. But I would like it that I can use it for entertainment to (-> gaming)

Processor : 2.5GHz Intel Core 2 Duo
Memory : 2GB 667MHz DDR2 SDRAM - 2x1GB
harddrive : 250GB Serial ATA @ 5400 rpm

so, the basic prize is = 2.200€

Things I can upgrade:

Processor : 2.6GHz Intel Core 2 Duo [+ 220,00 €]
Memory : 4GB 667MHz DDR2 SDRAM - 2x2GB [+ 160,00 €]
harddrive : 200GB Serial ATA @ 7200 rpm [+ 45,00 €]

so wich upgrades would be wurth the extra money??

also something they let u choose but does not cost anything extra isif you want:
-standerd widescreen
or
-widescreen with shiny toplayer (they say this one lets the colours come out more. but if its more shiny, will it reflect the things around me? cause that would be anoying)

I'm hoping for some quick responses since i'm going to order it tonight ^^

Tnx in advance y'all!!
XIX

*bump* c'mon guys :s I need to order it in a couple of hours