Hello, Myself Ranjeet (mrphpguru). Firstly, Thank you for your this job post.
I have written this proposal after checking your site thoroughly and understanding your requirement of adding functionality for maintaining different delivery time for in- stock and out of stock products.
As an expertise in WordPress/ WooCommerce and custom Php, I can easily add the setup to your existing WooCommerce site.
Please take a look at my profile and portfolio list to know more about my expertise.
I hope we will do further conversion to get the job done.
Looking for long term good business relationship with you.
Thank you for your time,