Personally I would go with the S-71 because they look better, six pounds less, and don't stick out as far as the Dark Star. If you choose the Race Star go with a 17x10.5.
Neither. 17x7 up front with a decent summer tire for high speeds and 15x10 275/65 DR in the rear.
The weight don't mean shit so id go with the Bracket Racer in dark grey its the same as the Darkstar but a dark stealth grey color.
I have run both the lighter Welds and my Racestars and my ET never changed plus the Racestars are a little beefier for the street and like half the price plus I think they simply look better. I actually see more of the Weld S-71's then I ever have the Bracket Racer in stealth grey.