Microsoft provides two free tools, designed to work together, that help you develop, test, and deploy Windows Store apps: Microsoft Visual Studio Express 2012 for Windows 8 and Blend for Visual Studio. (These tools require Windows 8.)
I already have too many IDE's on my box. One of them is Visual Studio 2012 Pro. If I want to develop Windows 8 Apps, expecially the HTML5 variety, do I really need to install that huge SDK along with Visual Studio Express 2012 for Windows 8?? Or can I just install some templates and add some nuget packages?