Answer:
My straight answer is you need a Diverse team with somewhat a high level of management with Gain Sharing Program as the incentive programme.
Step-by-step explanation:
Since the question is long, I'll make it shorter. The team is New, the goal is wide, the team's autonomy (working independence) is not much strong.
A Diverse team is required as the set of tasks needed to be done requires different skill sets. (like law, tax, etc.)
Although the team is highly talented, they are new and not much experienced. So, a high level of management is required at the beginning until the team stabilizes.
Since its a new and diverse team, team spirit has to be established. An unfitting rewarding system could be the very beginning of various conflicts, trust issues and jealousy among peers in the group. Eventually destroying the team altogether.
Gain Sharing program mainly focus on improving the team productivity through participation, involvement and creative innovation. Eventually the entire team's productivity goes up and then the entire team is rewarded.