Advanced Job Scheduler - changing run frequency

We have an AJS job (single command) that we want to run on the following
schedule:

Mon-Fri 8am-5pm run every 5 minutes
Mon-Fri before 8am and after 5pm every 60 minutes
Sat-Sun all day every 60 minutes

There are a couple of ways I can think of to do this:

1) Set up 3 separate AJS jobs that all all the same except for the schedule.
2) Set up 1 "real" AJS job that is the actual command, then a couple of
other AJS jobs that do a CHGJOBJS to the schedule of the real AJS job.

The first seems simpler to me, while some may think the 2nd is more
"elegant."

Has anyone done something like this? Pitfalls I'm not thinking of?

Thanks.