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You can add how ever many other conditions you want. Also, if the computer is off, it will run first when you turn it back on (if you want, that is. This cannot be done at all with cron). Or have it run on Wednesdays after 13:30 whenever the computer becomes idle.
This job will only run on Wednesdays and will exit if the Wednesday is not within the first seven days of the month. You can adjust the time, but this one fires off at 9:30am.