I have heard that the stage one is a waste, especially if you are going to go into the motor further later so probably go atleast stage 2 on the cam and valve springs.

with 11:1 I myself run premium in it which around here is 93 octane I wouldnt doubt that you could use 91 but I prefer to be on the safe side and run a better octane in it.

 

What altitude do you live at? Wisco tech support told me to run "Regular" in mine with the cam and 11:1 (I live at 5600 ft and ride above that most of the time).

 

Im at about 1800-2000 above sea lvl

 

I usually go to the Oregon Dunes, sea level, but would like to try St Anthony at some point. I have no problem with premium grades, but I would rather stay away from mixing and having to hunt for special additives.