If the owner has agreed to sell the domain, try to get the agreement in writing if possible. Or better, draft and sign a purchase agreement with the buyer. This will legally dictate the terms of the purchase and protect both parties. Next step, you’ll have to make the payment. Don’t just wire money to the buyer once you have reached an agreement. You need a secure transaction to protect you from any fraud activities. Use a secure service such as Escrow.com to close the deal.
If you are marketing yourself, ideally you'll be able to use your first and last names (johnsmith.com or janesmith.com). Even if you aren't marketing yourself, it's not a bad idea to register your name as a domain now, in case you want to use it in the future. If you are marketing your business, you should see if your business name (yourbusiness.com) is available.
Although not so popular among the users, Craft CMS is an effective content management system. Some major examples of this are Netflix and Salesforce websites. It is a much more complex and developer friendly CMS platform that provides exclusive back-ends for your websites. Unlike WordPress, it does not provide front-end themes that you can use. Instead, you can use their templating system that is powered by Twig to design it yourself. Adobe Muse vs WordPress vs Dreamweaver vs Squarespace vs Webflow vs Wix vs others | 2019
Wix advertises itself as the perfect tool to create your stunning website for free. To make this possible, Wix delivers a step-by-step wizard-like environment where you’re taken by the hand through the whole process of building your site. In addition, Wix is a hosted solution that also takes care of housing your site. This allows you to focus on creating the content and leaving the technical stuff to them.
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