Hi, Hope you are doing great!
I have gone through the details and understand the exact requirement that you want us to build the website in wordpress and later you want it to move on to shopify. I have some confusion related to the website that you want to move to shopify where shopify do not provide more customization as compare to wordpress. So contact with us so that we will discus these things and start accordigly.
I have extensive experience in CMS like Wordpress, Joomla and Drupal with woocommerce, opencart, prestashop, magento and others Shopify, bigcommerce with the PHP and Mysql Database. I will provide you the bes UI/UX with the mobile friendly design.
Share any further related info in freelancer chat box which will help in getting a brief idea about your project and will be able to provide you my best result.
Regards,
Peter