The 50/50 setting should be almost dead on for stock.
Honestly, unless you disconnect one of the end links from the front sway bar or remove it, you will not realize the benefits of using 90/10 front shocks. The sway bar kills weight transfer so much. I recently tested this theory just 2 weeks ago running my car. No suspension mods what so ever, the only thing we did was to disconnect the drivers side front sway bar end link and boy did she weight transfer. With it connected the car would barely weight transfer. 1.76 60ft was the best that day. Which was surprising.
HTH
Patrick