Keynote Presentation-Help!

I am creating a Key Note Presentation for an Orientation for Freshman Parents at our high school. We have used the last few years, but did it LIVE in an auditorium. Due to current situation, we want to virtually send it out with our voices recorded on the presentation. I have started recording, but haven't gotten too far because I want to make sure I am able to send this out and that it "plays" the recording. I have tried multiple things and some people just can't hear the recording (those that I send to collaborate)

Here are my questions and appreciate anyone's help:

1-The file is so big, it's tough to send. Which file system is safe and can be used to send to someone?

2-Can I embed this onto a web site and have parents go to the web site to watch? If so, how can I do that? My webmaster cannot receive the file I send her because it's so big (she is not an apple user so doesn't do iCloud).

3-When I click on Collaborate (sharing options) and allow people to view, then I cannot seem to record anymore, I can only edit the pics in presentation.

Thank you for any help!