Automatically launch Safari with a certain URL the first time the Mac wakes/boots up in a day?
You can use Automator for this.


Open Automator
Choose type: Calendar Alarm
Drop action 'Get Specified URLs' in
Drop action 'New Safari Documents' in
Save Automator action
Give the Calendar alarm a name
The Calendar app will open now
Edit the Calendar event - repeat every day at 08:30