This is your one-stop point to keep a close eye on the schedule, and indirectly handle any issues related to scope, time, resources and cost.
RAID (for risk management). This ensures that you (and your stakeholders) are adequately prepared for any potential surprises that can take the project off-course. You are also empowered to catch these surprises and address them in time.
Communication with strong people management. As a manager, you will have a lot to communicate with your stakeholders, good and bad. You will also need to draw the unanimous support of cross-functional teams, sometimes with conflicting goals (the classic development versus testing paradigm). An assertive communication style with strong people management skills can help you stay on top of the game, and your project. You can cite examples of good status updates, email communication, meeting agendas, etc. to illustrate this.