multiple timer routine?

[coyote2]

What's the best way to create a Routine that will launch 7 timers? (Of duration 49, 47, 40, 35, 30, 10, and 6 minutes.)

In Routines I don't see a "Timer" action, and I couldn't find a relevant Skill.

Here's the best thing I can come up with:

Wait 6 minutes
Play Buzzer
Wait 4 minutes
Play Buzzer
Wait 20 minutes
Play Buzzer
Wait 5 minutes
Play Buzzer
Wait 5 minutes
Play Buzzer
Wait 7 minutes
Play Buzzer
Wait 2 minutes
Play Buzzer

But this is pretty weak, in that they aren't timers so it'll just play the Sound once then stop without needing to be shut off, and I guess I won't be able to ask how much time remaining.

Oh, and if the above is the best I can do, is it possible to set the sounds to Play at a particular Volume? I know that before each sound I could add a line to

Set Volume to 10

then after each sound I could add a line to set the Volume to something else (but of course not to whatever volume had been playing before the prior Set Volume command.