Do everything on cast iron, then if your engine requires something forged, put forged things, but only if it technically needs it
Apart from that on the purely technical side, Glued aluminum chassis is not so adapted to a premium car for me, it limit the production. The adv. automatic gearbox needs something like 8 speeds and you should at least choose Alloy wheels, steel doesn’t sounds very premium in 2018.
And the design doesn’t works for me, there is not any LED things inside the lights, and it looks more early 2000’s than 2018.
Apart of this, you have a good drivability stat (if you increase the rev at 6700rpm you have 81) and not a bad comfort. I think you could reduce the fuel consumption, but it’s ok (and you would probably lose power by doing this).