I'm not a big fan of the negative offset wheel "look", but your combination seems to work (not that my opinion means anything).
Looking forward to seeing it "in the weeds".
On another note, I just retuned from a two week road trip where the LS3 dragged us more than 2500 miles all over the southwest. Tank - to - tank mileage was mostly around 30 MPG, with a best (Tucson to El Paso) of 32.5 @ 79 MPH average. Not too bad...