Hello,
Thank you for considering our bid.
As a web developer, we already use the Divi theme (and other Elegant Themes) on a variety of sites.
We suggest creating a new 'child theme' in addition to your specified scope of work so that new updates of the Divi Theme will not affect any customizations done to the child theme.
The time to do this (assuming all passwords, etc are provided, and servers are up/running) should be no more than one day, however for contingency purposes, we have quoted 2 days.
Please contact us if you require any further information.
Thanks & Kind Regards,
Edge Weaver LLC