Dont bother tweaking the suspension for stoppies. It might make sence to do it if you were trying to pull some 500 yard craziness, but your bike can do a regular stoppie without help.
Check your system, make sure its bled. Make sure your brake pads have plenty of life left (almost dead pads act funny).
Ride around the block with your front brake on (not locked) get the tire warmed up and... well you know the rest.
*Clank, chainsnap noise*