Hi Dear,
To add Ship Date to Shipping Options on a Customized Drupal Website, I will create a field for it on the line item for easier and better views integration respectively for day of the current date/time, day of the week, Saturday/Sunday, holidays, shipping cut-off time and no-ship dates.
And will show the FedEx ship dates on the website & In order to show the UPS rates, I will repeat the FedEx script for the UPS rates.
So handling your project won't be a big deal for me. I would be very easy to achieve the same result which you're expecting & make you sure you will be really amazed by my quality work :)
Waiting to hear a positive response!!
Best Regards,
Shikha