Maybe I was not clear. The adjustable camber arms would allow you to minimize or eliminate the negative camber. Leaving the original members in place would produce negative camber which is not all bad.

It could very well be that if you will properly adjust rear toe and ensure an accurate thrust angle while doing so, you may not have tire wear problems.

Have you posted on Performance Paddock. There are many there who have been there, done that. I can only theorize.

Good luck,