Adding a predictive time for delivery for woocommerce [on hold]

I have a woocommerce based ecommerce site. I would like to add some sort of prediction of when a package will arrive based on the chosen shipping method (eg FEDEX or FEDEX 2 day). We have a standard processing time before shipping so that FEDEX 2 day is actually 4 days from when the order is submitted (if it is submitted before noon EST).

Anyway, couldn't find a plugin or anything like this in a google search. This type of feature exists in Yahoo stores and on Amazon..

Any ideas?