In this case I modeled the suspension on what the 3D model had. So it ended up with very little Trail and Scrub and hence the very light steering.
I think it helps when two wheeling, it was awhile ago now but I think I played around with more trail and scrub but the steering became unpredictable, and perhaps it is close to reality, as you said it is a very light car with very skinny tyres.
I aim to not so much get everything 'right' but to not get anything 'wrong'. I hope that translates correctly.