You will be relieved to know that this page is short. All of the basic employee benefit statements routine is 'in place'. Methodically repeat the steps and refine every element. Coordinate Team tasks, document progress, push when needed, help as required. Be calm. A few tips are on the next page.
Note that producing employee benefit statements 'in house', without the appropriate tools can be very difficult. Remember that you are on the skyline as this is a high-profile Project. Seriously consider using a qualified vendor for this Project, at least in the 1st year.