Every kart at every track can be different. We have run as much as 2 front 1 3/4 rear at one track, 1 3/4 front, 1/4 rear at another track. We've run 1 1/2 front 1 1/2 rear. We've been fast with all of these. You just have to make sure your cross weight gets reset when you change staggers around.
Having said that, you should start with the staggers that the kart manufacturer recommends and adjust the set up around that. The "typical" set-up seems to have the front 1/4 more than the rear.