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.
Your content is the meat and potatoes of your website. With all of the Google Panda updates, it is extremely important that your content is unique and relevant. If you have multiple pages with the same content (or if you have your content on other people’s websites), you will run the risk of getting penalized by Google and your search rankings will suffer.
Finishing the development of an application is still far from ending it. During the recent years, users have learned to expect a full-fledged, complete setup solution bundled with your product---and as the setup is the very first part of the application the end user becomes acquainted with, the importance of its integrity and reliability cannot be overestimated.
The best way to create a website is to find a web host that has all the services your website needs, and that offers a website building application that will create the type of site you want. This way, your site will be up and running quickly. Even though these website builders do a lot of the work, you’ll need a good plan, an efficient design, and engaging content before you create your website and publish it on the web.