[Gav]

Corner weighting is speculative at best with most cars.
If you were serious you would build the car with weight distribution in mind, like battery on the opposite side to the driver for instance.
You do need to take into account the weight it will run on the track and just try to get things as close as you can.
Mine used to be about 20kgs out across the back and 40 across the front with me in it.
The cross weight was around 50.9%.
Could have been better if more thought went into it while building but that would have required scales the whole time.