Camber Question

Hey folks, I was hoping someone could give me some advice on what my options might be for tightening up this setup. I took a chance and ordered some 325/30 4’s tires for my PP2 and I’ve got a bit of rear poke going on. I was hoping to get a bit of extra sidewall but I wasn’t expecting so much extra width. Currently the rear camber is at -1.7 but there is still a lot of tread showing looking down from the fender. At what point is going more negative going to cause issues and do you think it’s possible to correct this? How much adjustment is left from where I’m at now? I’m lowered on FP GT350 springs if that makes any difference.

Thanks in advance!

I run anywhere from -2.0 to -2-2 without any real issues.
Yes, the inside of the tyre wears a little faster, but nothing crazy.
Each 0.1 degree is roughly 1mm deflection at the top (it isn’t a linear scale, so don’t shoot me)

I like the look