Hello, Cavenir!
1. Will add this to an update: "When you meditate silently for 30 minutes while repeating the name of someone with whom you share a blood link you can communicate telepathically with her for one scene." Thank you for noticing!
2. Yes. See Weaknesses in page 59.
3. It reverses your sleep cycle. You still spend 1 blood to wake up.
4. Of course! Feel free to do whatever you want with the game.
5. You can still pick Fierce and use your claws, it works mechanically the same way, just narratively different. And you can still pick Path of Radiance.
And thank you for your compliment! I hope you have a blast!