@lnorris ...
For the lectures you have recorded using Screencastify, have you uploaded any of those to your Studio library? You can then embed those videos into your content pages in your course. Plus, you could enable the commenting feature below any of your Studio videos so that students could comment on any part of the video (similar to a discussion topic). You can also get insights on your vidoes to see who is watching your videos and what parts they are watching.
From what I'm gathering, it sounds like you are wanting to add a bunch of videos to a single page within a module. This may sound like a good idea, but I'd also suggest that this might not be ideal for those who are viewing your course(s) on a mobile device such as a phone or tablet. Adding several videos to a page might look fine on a computer screen, but it would be a lot of scrolling on a smaller mobile device. So, you might want to keep that in mind, too.
Hope this helps.