Do you have adjustable front camber arms? If not your camber will be fixed.
Negative toe or 'toe out' increases inside edge wear so you'll want to steer away from that.
Positive toe or 'toe in' increases outside edge wear so if you run that with negative camber it will help to even the tyre wear out.
On your car where you want it to handle well and have reasonable tyre wear something like -1.5 degrees front camber and 1-1.5mm of toe in either side (2-3mm total) might be agood place to start?