I'm creating a website with React in my free time, and this is my first time doing this. So far, I've worked with React and React Router, but migrating to Next.js or Gatsby would cover Routing and SEO, which I currently cannot work with. Most things I read say that Next.js is the best solution, but I am trying to decide whether it is worth the time and effort to recreate the site for SEO and speed purposes. Does anyone have suggestions?