on a road car id be concerned with the way the tyres wear and the ho nervous that would make the car, what you also adjust it the TOOTS and the rate of turn (the ackerman angle) will be affected from the pair of wheels.
you may well find that on more than half lock the car refuses to turn, it can be down to preferance and there are very few willing or able to experiment - fair play to you for setting it how you like it !

If you want the car to turn in and promote power oversteer the rear toe out is your friend .

when you are giving your car some stick, keep a digital temp guage in the car and measure the tyre temps over your chosen route - the true way to check alignment/tyre imprint !