Doing it yourself, unless you were a pro to begin with, can be difficult for some. You will need to read many tutorials and it may take some time to get going. You could also risk having a site that looks very badly made and thrown together. It is also important (for visitors and search engines) that your site is easy to navigate, which may be a problem if you do not know what you are doing.
Making a Do It Yourself website can be hard, but if you accomplish your goal, maybe you will learn so much that you can write a few articles on it to add to a new DIY niche site!