Complicated System Monitor Schedules

So, I'm trying to get MRP to lock up on us a little less (4 times in the last 2 weeks), and something I wanted to try was not running Auto Job Complete / Auto Job Closing while MRP runs.  MRP Runs from midnight until about 5AM for us.  Auto Job Complete runs ever 5 minues (interval schedule) and Auto Job Closing every 2 hours.

Has anyone ever figured out a way to have an Interval scheduled task, but to not run that task for 5 or 6 hours in the morning?  I know Windows Task Scheduler could easily accomplish something like this, but system monitor is not nearly as robust.