Hello,
concerning to the pictures above i wouldn't say this is abnormal tyre wear for track days and racing.
If you look at the front tyre, you'll see that you've overdriven the tyre. This can't be compensated with 1 degree more negative camber.
If you're talking about lowering and all that other stuff, please think about the consequences for the driving character of the car first. Lower, harder and more negative camber doesn't mean faster or better breaking or better stability.
Just my 2 cents
Regards, Markus
PS: This channel seems to be a good introduction for people who are interested in suspension:
https://www.youtube.com/watch?v=jSFmUmVWBp0&list=PLE067A7397E1AF108