I don’t know where you are based but I can tell you that in much of the English-speaking world the word “Jew” itself has quite problematic undertones. These days, you would usually speak of Jewish people/persons or say that someone is Jewish. In addition to that, using Jewish people as a stand-in for frugality is pretty offensive as this is a stereotype often used to discriminate against the Jewish population. For both reasons, I would strongly discourage you from using it as part of your business name and also reconsider if that is a nickname you want to continue using for yourself.
If possible, stay away from alternate spellings such as c4t.com for cat, unless you are targeting a specific audience (e.g. millennials who are more familiar with alternative spellings), or can grow your brand long-term. c4t may be a great domain name, however, you always run the risk of losing potential visitors to the actual cat.com website, as some visitors will be confused or just forgetful and type cat.com into the address bar.
WordPress is easy to setup, install, run, and manage. There are numerous themes, plugins, and other products built for WordPress, and You have no shortage for help (which you’ll often need) from tons of “learn all about it yourself” self-help content on the WordPress official site, communities, blogs, and more. It would take weeks to build websites like these from scratch without all these convenient extras mentioned above.