Issue with the Architecture of a CMS site

I'm building a site which mainly has articles and I'm using ASP.NET MVC 5 framework. I want to have an admin page where I can add, edit these article content.

I'm building one site for both content management(Add articles) and display content(Display articles).

Are there any disadvantages with this approach? (Do I have to build one site for content management and another site to display content?)