You can absolutely do that. If you want to upgrade to a paid plan to get some of the features you want, then you can switch at any time through the My Products option in your account or with the help of a GoDaddy Guide. Once you upgrade your site will have all the same customizations and work that you've already put in place, just with the added features. See Website Builder plans and pricing for more info.
Although you can access many great features on the free plan, including adding a messaging system and pop-up in just a couple of clicks, much of what makes GoDaddy a great platform (namely a ton of extra marketing features) are kept under the lock and key of a premium subscription, which is fair enough. Upgrading for these extras is simple, and prices start at just $10/month.
I think you should consider mentioning some of the options available for the open source version of WordPress (WordPress.org). The most notable option we have now I think is the page builder plugin Elementor from Pojo. The free version has tons of widgets one could use to build a responsive website for free without touching a line of code. I believe the space in WordPress.org is no longer for just for Developers. Anyone in the beginner stage can build sites on WordPress with much more flexibility than anything like WIX could ever offer since they are a closed platform. Mathew from LaunchParty has provided an amazing FREE course that will guide you how to build amazing sites with WordPress and Elementor. And he even provides you with amazing Elementor templates that you can use. Lastly, please note that not every thing that is meant to be sustainable is truly free. Last time I checked, in order to have a proper website with WIX, it was only free when you use their domain extension. If you ever wanted to remove WIX from the domain name, then you would have to pay for that. On the other hand, WordPress.org is open source, meaning free. But hosting is not, neither is your own domain name. There are many WordPress plugins that are worth paying for as well, including Elementor as well as others that will handle other important features such security.
Like Wix, Weebly has drag-and-drop functionality, as well as an integrated CMS solution, and hand-coded HTML files. The in-house editor comes with SEO tools and Google Analytics. With PayPal integration, an automatic tax calculator, digital gift cards, and more, Weebly is a smart choice for ecommerce businesses. And unlike some of its other free competitors, Weebly is ad-free.
Wix supplies built-in Google Analytics to monitor your site, and even offers additional apps for individual preferences. If you want, Wix can even design your site for you. The biggest downside of Wix's free version is it doesn't come ad-free, and each page of your site will have a prominent Wix ad. Ad-free is only an option if you pay for the premium version.
I have personally built two different sites using WordPress and found it very easy to use, setup and configure. Once it is initially setup, maintaining the site is as easy as logging into the WordPress admin site and adding your content. I was initially very surprised by the ease of the setup to get my sites up and running. I was able to get the site online and running on a customer domain within 15 minutes. This was a welcome surprise to me the fist time I used WordPress. While WordPress sites are not as simple as drag and drop configuration for the novice computer user, average users will find it easy to edit text and add content using the built in templates. The price is possibly the most attractive feature of WordPress. The word free will often attract users but the usability and ease of the software is what will make users stick with the platform. After building two sites on WordPress, I would strongly recommend it and will surely use it for my future website building projects.
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