Shopify ecommerce help

I am starting a photo card company/ photo editing service. I have a written plan of everything I need it to include and can even provide the photos, videos and product images I want to include. I have picked out a template already. I have a detailed outline of exactly how I want each page and section to look within that template. I just need someone with experience to set it up for me. I need place holders in each category so I can go in and add the products myself moving forward. I am on a time pinch because I need to launch as soon as possible to get in on the holiday season. Can you help me?