So this is a good start. I did similar to you, offering packaged websites for service businesses. In terms of hosting + CMS you have the choice of using preexi

So this is a good start. I did similar to you, offering packaged websites for service businesses. In terms of hosting + CMS you have the choice of using preexisting packages from bluehost, siteground, wordpresscom, ghostpro, etc. or you can test using your preferred VPS provider and setup your own machine, cms, etc. Before you code, while doing the sales process you need to determine whether the client is willing to do some CMS work, let someone else do CMS work, or have fixed information. The sooner you can get an answer the better you can decide what package to use. It would be better for you to setup and bill your client, this way you can add more to your rate BUT you would be liable if the client fails to learn how to use the product (teach them by providing short training session and simple handbook/tutorial documentation. Use what you're already familiar with otherwise pick one then iterate. Good luck