I want to make an interactive animation, and I need some help.

Hello community! 

I'm trying to figure out a way to make an animation interactive using Animate CC. It's going to be story-driven, in-browser, 16:9 Full Screen (with fullscreen mode on in the browser), and has several options and timelines. I'm thinking about an 4 minute experience with at least 4 diffrent endings. 

I've tried the HTML5 Canvas, but it doesn't support Scenes, which will make the project a mess if I do it all in one timeline (with the code telling the timeline to move every time a scene ends). I also tried WebGL, but it hasn't got the window-scaling options HTML5 Canvas has under "Publish Settings".   My final resort would be Actionscript 3.0, which has all the features I want, but then my final product will need Flash to run in the browser.

What would be the best way for me to make a project of this size? 
Thanks in advance!