set my front toe as close to zero as possible
Again, as in my previous post, the preferred setup is for toe
out on the front.
You're going to notice it pushing (understeer) with the front positioned where it is at the moment,
and it's not going to be very responsive whatsoever at initial turn in.
And, with the front close to 0, and the rear at toe
out, you'll find yourself going sideways right off your line.
^^^The front will be pushing towards the outside of the turn, while the rear is following right along with it due to the toe out.
There's a reason the factory specs for the SVTF call for so much toe
out, and IMHO, there's no reason to change that.
I've played with it a lot on the track (AutoCross), and I can safely say that more (out) is better. [

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As far as tire wear...
If the rear is at -2° with toe
out, I hope you have some money saved up to get a new set of tires a couple times a year.
Sorry to come off so strong, but IMHO, that's not a good setup.
Neither for the track, nor the street.