Seamless OpenCart to Shopify Migration

I’m ready to retire my current OpenCart site and relaunch on Shopify. The store holds between 100 – 500 products, complete with variants, images, reviews, and blog posts, and I want every one of those assets moved over without data loss... (Budget: $30 - $250 NZD, Jobs: HTML, PHP, Shopify, Shopify Development, Web Design, Web Development, Website Design, Website Development)