I've been working on a system at work (which hopefully we'll open source) which allows us to dynamically include and exclude modules, css and html based on the

I've been working on a system at work (which hopefully we'll open source) which allows us to dynamically include and exclude modules, css and html based on the users login. I have a question regarding the caching comment. "For performance reasons, it is never desirable to deliver the entire payload via an inline script. Inline scripts cannot be cached". The tool I've been working on, I've been dumping the js into the index.html (it's a single page app) because my thinking was that the time involved to make a secondary request was longer than the time it would take to include the javascript in the initial page load. What are your thoughts (if you have any) on this? Assuming I'm getting the javascript down to a sub 100kb included inline, at what point would I start to see performance gains by going with a script tag rather than including the javascript in the page?