A quick brief in response to your description, i can plugin the content from joomla to wordpress.
I can develop a perfect functional multi industry CMS wordpress, shopify, magento, joomla theme. I would do the design and coding for your website as I am PHP, HTML, C, C++, Bootstrap, Java script, jquery, Angular, react, node. Js and canvas specialist. Within this workflow I will concentrate on the usability of the site and coding. The design would need a few days. The coding more than a week.
I would be pleased to provide additional information and discuss application to specific requirement. I always prefer to offer quality and modern styles.
Thanks in Advance!