new tires. the bulldogs probably won't fare well at Whistler. Try some WTB Timberwolves or Maxxis DH tires. Bashguard instead of big ring if you haven't already done that. Set the 3way with 35-40% sag, add a little extra to the SPV. Try the Nixon where you have it, fiddle with it after the first ride to find the best feel.
Last suggestion: Have fun! oh, wait, you already knew that!
Last suggestion: Have fun! oh, wait, you already knew that!