If I have two Workshop Course ideas, each geared toward a different ICA, how do I decide which idea to validate and pursue?

I would only validate one Workshop Course at a time. Pick one, and if you find after researching on social media and using AI that it’s not the direction you want to go, then go back to the drawing board and validate the next idea. You have time! You don't need to rush the process.

How do you pick one? Run them both through the Sweet Spot strategy in Module 1, Lesson 1 and see which one fits better into each quadrant. 

Once you know how to create one Workshop Course and you understand the marketing behind it, you can do that with different courses and different ICAs; and it's actually a whole lot easier! So nail down one Workshop Course idea. Get it created, launch it multiple times, and then you can come back and validate the other idea with a different ICA.