I'd never bulk edited this and it took me a few minutes to figure out. So I'm breaking it down here for anyone else
Bulk Editing Handling Time
Go to your Active Listings under "My eBay"
Select all or under edit click "Edit all 000 items"
In your bulk editor...
Click on "Handling Time"
This will come up
Click on the relevant time frame.
Save and Save and it's that easy!
So after today I really am going on vacation mode. I am not even going to send the reminder messages anymore, because between the banner on each item and the handling time I should be covered.
So really this time, see you later!