Richard pretty much nailed it: Every member of your team will need the UE4 compiled with Wwise. You probably already have some sort of version control for your UE4 tree, so anything that came in the integration zip (or anything that is on GitHub), minus the demo game and Wwise project, is needed to use the Integration.
As far as the game goes, you only need your soundbanks. Once generated, they are found in YOUR_GAME_PATH/content/WwiseAudio. This is all that is needed for the other members of your team.
As far as binaries go, you would need the same binaries as when distributing UE4. As Richard mentioned, there might be licensing issues, so you're better off contacting Epic support on this.