Keep us updated! I don't expect any issues with the flash
Keep in mind if you installed and setup today, based on the screenshots above with a 15 day delay, it would probably run at on the 17th (15 days past it's first detection, checking every Sunday)
First Sunday which would be past the 15 days delay would be the 17th of March.
However I also noticed that your screenshots don't exactly line up back to back, because email settings are disabled in the first, yet on the next screenshot I see HTML options. (Which are only displayed if an email notifications IS enabled.)
So I'm assuming you've changed your settings since your screenshots and probably lowered the delay period to run this Sunday (delay of 4 days or less).
You can always confirm the delay period by trying to run the update function while an update is available!