Well that set-up I posted is pretty maxed out for steering - everyone else ran stagger ribs!!
Give it a go and see what you think. It depends where you need the steering, on power, off power etc. If you really need to just loosen the rear try stiffer rear springs. If you want the back to break loose on power try more anti squat.
I'm also running the std/old Losi steering, not the hybrid/CR rack. I tried both setups. The CR setup gives more steering at speed (but you don't struggle for it there) and the old style gives more at low speed/tight hair pins (where I struggled).
G