Single language site other than English What is the best approach of having a single language non-English site? I am thinking of performance mostly.

I dont want prefix or suffix in urls. I dont preferably want entity language (Language neutral possible in D?)

Adding a second language, deleting English? Will this have implications?
For a Single Language non English site, When you install Drupal 7, it gives you option of selecting the Language. Plus you will need to download the language PO files for your language.

But if you are using Drupal 8 the only requirement is selecting correct language when you install your Drupal. Drupal 8 will automatically download all the language files for you.