Create a single team from multiple specialties


Create a small team to deliver each chunk of functionality.  Co-locate the team so they can communicate directly, face to face, with no internal documentation required.  Ensure the team has (or has access to) all the required skills. 


Holistic Diversity


Co-ordination across teams requires some special effort, but communication within the team is cheap.  Team sizes should ideally be between 2 and 5 people.  A single person with all the desired skills is hard to find, over about 5 to 7 people and communications start to get too expensive.