The quickest way to create a course

Hello, 

I've been tasked with creating English language courses for the online students in our school. Here's what I've been doing. 

Create a template course with most slides which can be reused.

Create a new course and use the ready made slides from the course template. 

Struggle with glitches (if there's an audio file, it seems to wreak havoc with the feedback slides for some odd reason)

Send it to the team for a review. 

Fix issues and load it onto LMS. 

Am I doing it right?

Thanks for the help.

Robert