First, you need to think about the organization structure within your company.
You should list all of the responsibilities associated with your project and then delegate them amongst the management team like you would if you were writing a job description for each member. The job description should show who is responsible for each of the items on your list.
Think of this like setting up a board of directors or officers of a corporation where you would designate CEO/COO/CFO or “Director” (Director of Operations, Director of Finance, etc.), roles and delegate accordingly. The delegation should be based on each of your strengths and weaknesses, just like you would do if you were being hired for a job.