Whoa... I didn't even know there was such a thing as the RPF1 RC! Absolutely brilliant looking wheel and I assume that like the RPF1, it's a pretty lightweight wheel. $2400 with tires seems pretty cheap for genuine 2 piece wheels. I'd be all over these if I had a wide fender car.
Speaking of wide renders, that's an awesome build! I'm not usually too hip on widebody cars but I definitely like that one. Very well done. I'm not sure if it's in any of the build threads or not but I intend to look it up!