Yes, definitely! You are purchasing a commercial license. The number of projects or products for sale is not limited. For more information about licensing check our license agreement here: view license
Yes, one license is valid for one device/user only. You can purchase additional licenses at any time, which grants additional users in your organization the rights to use the fonts on their respective additional computers.
He just needs to buy an additional license, if he will use the fonts actively and wants to install it to his computer. With other words – if he uses the logo with rasterized text he does not need an additional license.