Restricting available languages

Hi there. I’m just starting to integrate your plugins, wonderful set of products you’re offering here, thanks.

My question is this: I am putting together a community site for which the primary language should be Spanish, with fallback to English and Portuguese should they choose.

I’ve downloaded Languages for WordPress pack, but I don’t actually want to offer my users all 75 languages, as it will be too confusing an experience.

Is my only option to manually pick out the spanish and portuguese files and only upload them, as all will be presented in the chooser if they are all in the folder, or is there a place to select active languages?