sx3 questions

[leeboy44]

hi guys
ive made the move from a durango to the sx3, its all ready to go for its first outing and i cant wait.

just a few questions,

im running indoors on a small ish carpet track ive set my duffs low would you say this is the best setting?

i been told have the rear diff high?
also running 32.5 losi shock oil in rear and 40 in the front using springs the car come with, is this ok?

ive never run big bores before and before the durango i had a 10 year brake so a lot has changed.

all help will be great thanks lee