Macbook

Well I have finally saved up enough money where I can start looking into getting a Macbook Pro. I am thinking right now just the 15″. The 13″ I think will be a little too small, and the 17″ just is too big for my liking. When I purchase this though, is there any software I should get for website development (PHP, mySQL, etc.) It would be nice if I had a good editor, and then like something like WAMP(did I get that right? The window servier program, or is it WIMP?) Anyways, just something that I can work on my mmorpg on a private server off of my mac. Thanks for the input guys:)