Make Directory Opus go to roots of drives invisibly, with pauses

I have a toolbar button that runs the following commands:

Go "D:\" EXISTINGLISTER Go "F:\" EXISTINGLISTER Go "G:\" EXISTINGLISTER Go "H:\" EXISTINGLISTER Go "I:\" EXISTINGLISTER Go "J:\" EXISTINGLISTER Go "K:\" EXISTINGLISTER Go "D:\DOWNLOADS" EXISTINGLISTER
I do this so the folder icons, starting at the root of each drive, are loaded, so when I need to go back to any of my disk drives, I won't have to wait for the folder icons to refresh (which happens when I access a drive hasn't been accessed for around 10 minutes). I have to back up a lot of files on those drives every day, this is why I need to do this. The commands above currently run so fast, the folder icons don't have a chance to load/be drawn before the next drive in the list is accessed. Is there a way to do the following...?

:arrow_forward: Run without any Listers being shown (run invisibly), possibly play a sound when completed?
:arrow_forward: Make each step wait until the folder icons are populated (drawn) before moving on to the next command?

I don't even know where to look in the help file to figure this out, so any help with this would be appreciated. Thank you.

Are you literally only aiming to get the icons drawn, or is the aim to make sure the drives are spun-up in advance (while still allowing them to spin down later)?

Sorry for the delayed response, Leo. I think I have figured out a way to do what I want, so thank you.