Think of templates as ‘clothes’ for your website. If you don’t like one set of clothes, just change to another one to give your website a completely different feel. And again, don’t rush into it. Choose different templates, browse them, see if they fit. The whole point of templates is choice, so dive in and find one that feels right for what you want to achieve.
You would not commonly include the legal entity (Ltd., LLC, etc.) in your domain name unless it is somehow part of your brand (e.g. the record label “Murder Inc.”). So, that’s probably not a good idea. In addition, your store name suggestions seem generic and not very memorable. The store name should either be a brand name (think “Adidas”, “Siemens”, “Nike”) or something that describes what you do/offer (e.g. “Reaj Kitchen Interiors”). Otherwise, it’s unlikely anyone will remember the name or find you online. How to Find Great, Short Domain Names! - Choosing an URL and Store Name