Wanting a 18x9f 18x10r wheel setup am I crazy?

Well I pulled the trigger on some 18x9" w/6.57" bs and 18x10" w/ 7.2" bs Shelby Redline wheels. Wish me luck! Thinkin 265/35 front and 295/35 rears maybe too.....

So do those fronts have like a +52mm Offset and a +55 for the Rear?