Sandalwood notes are notoriously difficult to smell; very often at first sniff they pear to be odourless. All I can say is keep trying to "get"them. Try their effect in a simple accords (with and without), try diluting even further (especially Javanol, which really is a powerhouse). Smell your dipped strip after a few days.
Regarding the musks, the two you have chosen are very sweet and sticky. If you want a more animalic musk (what I call a more genuine musk) you should try and get some Cosmone, or Muscenone. Unfortunately neither are easy to get hold of.