I've had chance for a quick run out around RAS and really liked the way the car handled even with the understeer, I did think the toe looked odd so i'll be updating the settings to what you've posted.
Main change i'd make for now would be to the gearing, for me first is too short for a good launch but once up to speed it did feel good so it may be a worthwhile sacrifice, i'll try a few sets of gears though and post them up.