Shopify to Woocommerce migration

We have an active Shopify web shop that runs alongside our retail shop in Cornwall. We have an ICR till system which keeps track of stock and the service between Shopify and ICR has been terminated. We wish to migrate our online shopping platform to WooCommerce to continue trading effortlessly. We are looking for a competent and professional service to migrate the Shopify data (<150 products, images, SKU, customers, orders, postage and packaging rules) to WooCommerce with ICR integration and Royal Mail Click and Drop service.