Recommended wheel alignment for negative camber setups?

Hopefully someone who has run with some decent camber (more than 5 degrees) can give me some advice here, but i want to know what sort of alignment settings i should go for maximum tyre life.

Should i be going for factory settings for all other measurements exept camber?

Or go for Zero toe in an effort to save tyres?

At this stage my setup is looking like 5+ degrees camber on the rear, 3 on the front (or whatever i can get with the adj pillow upper mounts on the JICs), 215/40/18 (or 225 if 215s arent available) on a 9J and 225/40/18 on the 10J (235s if the tyre shop wont stretch that much).

Would be great if i can get 10,000km (6000miles) out of the rears.

Hopefully someone who has run with some decent camber (more than 5 degrees) can give me some advice here, but i want to know what sort of alignment settings i should go for maximum tyre life. Should i be going for factory settings for all other measurements exept camber? Or go for Zero toe in an effort to save tyres? At this stage my setup is looking like 5+ degrees camber on the rear, 3 on the front (or whatever i can get with the adj pillow upper mounts on the JICs), 215/40/18 (or 225 if 215s arent available) on a 9J and 225/40/18 on the 10J (235s if the tyre shop wont stretch that much). Would be great if i can get 10,000km (6000miles) out of the rears.