In Game Mod for Ch3Up1 - Shows toughness and relationship changes of different options. Also has gallery unlocker. I just stumbled upon this game today, and have not yet completed it - let alone taken any potential different paths; so apologies if you hit any bugs, but should be solid I think.
Also, note this isn't a walkthrough per se, as sometimes taking a lose can lead to future, better gains.
Edit: Small mod update, added a note for score goal during Week 1 interview.
Edit 2: Small bug fix for round 2 of week 1 exhibition.