Before getting started, consider the few fundamentals that can help to choose the best package and platform. Always think why you need a responsive website? its, because you are losing potential customers to your competitor, which is well designed and responsive, do not deliver what your business exactly is or not having enough information on site for your web visitors.
If the answer is yes, you should get a responsive website right away.
Regarding the packages, always go for the package that gives you the results. get more website visitors, that convert well. Never go for simple 5 pages or 10-page website. Aim for better reach and with more content, portfolio, and blogs feature to drive that quality traffic to the website, moreover future expansion like marketing campaign in mind. All of that gives you the value in return.