If your car was 155@wheels on ava's dyno I wouldnt worry about that many saxo's troubling you. When I had my old s2, I found that holding it around 4-4.5k and then letting the clutch out gave me the best start and as soon as the wheels started to spin massively, selecting second gear.

What tyres and size wheel do you have? I used to have goodyear f1's and 195-45-16 iirc.