BlackShelbyGt500

so guys i decided to order my rims, i went with http://www.wheelwarehouse.com/p-5655...tte-black.aspx
20x8.5 front with 255/35/20 and 295/30/20 rear with either fallen tires or yoko.
now for my springs and dumper i decided to go with http://www.tirerack.com/suspension/s...oModClar=Coupe and http://www.tirerack.com/suspension/s...oModClar=Coupe let me know what you guys think about the springs and dumpers. and i need ideas on the rotors i prepared cross drilled and slotted but easy on the wallet though.
also i seen this guys post an ad on craigslist his selling his http://www.tirerack.com/suspension/s...oModClar=Coupe for $1,200 should i just go with that one?
thanks guys

keith