Incorporate Stencil into existing core application

I have been using stencil for a while using the ‘starter’ projects etc, I would now like to use Stencil (with Stencil store) inside an existing core web app with the aim of slowly moving the app from a server rendered app to more of an SPA/RestAPI style app.

I have used the ‘components’ starter to set up a file structure inside my asp app and I think I can get the build setup to put the output in the right place but I’m building Stencil from the command line. I was wondering if anyone has done something similar or has any ideas so the Visual Studio build process can handle everything?

Another option is to add Stencil without using ‘init’ and let Gulp handle the build etc. Is this an option and how would I go about it?