don't do it from the registrar, use the.htaccess file.
Before you do anything, are you sure this is a good idea? I have seen people destroy their websites with 301 redirects. Remember the purpose of a 301 is to transfer a website/URL from one web address to another. Google isn't stupid. They know people fuck around with 301s, which is why their algo detects shit like this. So unless the niche is exactly what you had before, and the content is a very good match, I would advise you not to do it