In my opinion, you don't need Elementor Pro because, with Neve's Custom Layouts, you have a lot of design options. With this feature, you can even create your header and footer with the free version of Elementor and display them conditionally on your website. However, with Neve Pro, you are limited if you want to have all the freedom when designing the single view of your posts (Single Template) and your archive pages. However, the developers of Neve will add more options for Single Posts with one of the next updates.