and how is the driver gonna fit in there?
Though i gotta love how you think, just try it, maybe go over the limits and try to find the limits, cant wait for the car.
Although i maybe have a few suggestions:
-Maybe a nose with splitter producing downforce and guiding air to the intakes
-An transversal gearbox, this is a part that doesnt matter as it wouldnt disrupt the diffuser wich is behind it.
-Low CofG, red bull style crashbox, make good use of this center 15cm
-Low nose, due to the ban of double deck diffusers the airflow to the rear wing will become more important, therefore an high nose is useless, it reduces front downforce and places weight up higher.
-Maybe rear wing end plates not on full height and a cut out in it for yaw performance.
-Really tight rear sidepods, you want as much air to the rear wing.
-Shark fin in full length
-The oil cooler maybe in the splitter or something, the splitter catches cooling air for the oil cooler, thus removing the need to put it high and also removes the cooling needed there thus increasing air to the rear wing.