Just to clarify–I think you can use a gauntlet structure for the 1st and 2nd decisions and just return back to the main path right away. For the 3rd decision in your current path, I think it should branch out a little more. You will probably have some overlap in the options; the mix of questions should include some good behavior questions and weak knowledge questions. It could start out like this.
If you want to just build out that specific section and then upload it again for feedback, I can review it before you try to extend that any further or connect it to your ending.