Shopify Customizations – custom coding experience required

READ THE REQUIREMENT CLEARLY AND APPLY – All the placeholder proposals will be rejected.

I have a shopify store that needs some customizations.

Scope:
1) Checkout Page
– At checkout, I would like an add-on product that would provide insurance on any lost packages that are shipped. The accept/decline box would be pre-selected. Pic attached of similar product offering.

2) E-mail Automation
– Once customer purchases a certain group of products, I need an email to be sent to that customer with a formated script along with a PDF attachment.

3) Shipping
– I currently have next day shipping as a shipping option. I need this option to be turned off at 3 PM EST every Friday and resume on Monday morning at 12:01 AM EST.

If you have any questions, please ask me.

If someone has experience customizing Shopify stores with custom coding, please apply.

My budget for this project lies between 100-140 USD.