Hello,
I'm a full-time freelance web developer proficient in HTML, jQuery, Bootstrap, PHP, MySQL and Software Architecture.
I'd love to see the sample packing slip, it seems it didn't attach properly.
Reading the description, what you want is when the PayPal IPN email is triggered, you need the packing slip (PDF) to be generated and sent as well, with the customer info embedded on it.
You also need a CSV of the same order with the required information you mentioned.
Lastly, you would need a CSV file of all orders (automatically) emailed at he end of each day(?)
Are you using an open source platform for your website (Wordpress, Prestashop, etc) or is it custom coded?
Looking forward to getting some feedback from you soon.
darkwind