If they're related, it would probably be interesting and productive to put them on one map and come up with a cohesive plan. On the other hand, though, if they are in very different areas of your life, I would probably do separate maps for each area.
On another note, I have been experimenting with using Future Mapping to plan my day, and then review it at the end of the day. This has a dual advantage of helping me to be more effective and efficient in my planning and assessing what is and isn't working and then tweaking it to maximize my future results.
Let us know what you decide to do and what kind of results you experience! I'm loving how versatile this program is.