That's a massive amount of money. You have to let the guy know before you take any further steps. The transfer of the coins should be trivial (assuming blockchain.info doesn't require any additional authentication) and could be coordinated with him later.

Edit:

You only really have to press Send below the "BE YOUR OWN BANK" text on the dashboard. The rest could be figured out easily once the guy is able to create an address/wallet of his own.