Stating the obvious, remove FSD.
I sympathise (Tesla does not make it simple some times when they start pricing vehicles after incentives and savings etc), but I don't think there was anything in the order process that did not imply or state that the gov grant was not included in the price stated. So unless you booked on a different website than me, it would have been stated at time of order. Its the same with deposits paid. The price thankfully does not include the price of the deposits paid.
I must admit, its frightening seeing the full cost of the vehicle though in black and white. Nearly as much as I paid for my first flat and far more than I have ever paid for a depreciating asset such as a car, oh, my first flat was a depreciating asset...
This all said, I'm still expecting any final bill not to match my back of envelope costings.