That's a pretty good start. One minor correction, instead of saying "IC goes in the Activity Throughline" you could say "the IC Throughline Domain is Activity".
There are two ways you could run into trouble here:
- If you had a bunch of other ideas about this story that weren't mentioned in that summary sentence, it may be that your throughlines should be in different domains. Like maybe the IC is an activist, but if you had all these ideas of his conflict stemming from his fear & doubt, then he might be in Fixed Attitude.
- If you're building the story from scratch, just be aware of what these throughline assignments mean. For example, the IC throughline's conflict (and influence) is going to come from activities in the physical realm. If you just say he's an activist, but don't encode how all the conflict and influence stems from activities, it's not enough.
Also, hashing out opposing points of view is not really the RS. The RS is more about the developing relationship between them. Maybe despite their opposing points of view, they end up like brothers to each other, or end up falling in love. Or maybe they had a relationship before this whole thing, friends or enemies or grandparent/grandchild, and the story puts that to the test. This might help: focusing-in-on-the-relationship-throughline