The level of difficulty will depend on the size and complexity of your website, as well as your familiarity with WordPress. However, with some research and guidance from a professional, transferring your Squarespace website to WordPress can be relatively straightforward. It may also be helpful to use a migration plugin to assist in the transfer process. Additionally, hiring a professional web developer or agency can make the transition smoother and ensure that all aspects of your website are properly transferred. Ultimately, the effort required for transferring your Squarespace website to WordPress will be worth it in order to have access to the increased flexibility and customization options provided by WordPress.