lovely updates!
Though(as usual) i have some suggestions:
As you have added those small barge boards i do not see any need to keep the center one.
Also i would add two rear wing pillars instead of one, you can use those pillars to split the air to head through thwe hole and over the normal wing.
And as already told i would head for an mclaren style front splitter, i actually have also my own design ready(wich i might implement in my own car, but first i have to finish it lol) wich actually makes the nose cone some sort of wing, and then creates a splitter in that, on radiator intake height, wich adds flow to the radiator intakes, wich allows them to be smaller.