Hey Kostas, maybe you could take a look at Axis wheels? They play around w/ high disc and low disc to give the staggared look with same width wheel front and rear.
http://www.axiswheels.com/wheels/decade/decade.html The offset I remember from asking Axis are 18 by 8 via 40 + offset, still a little bit too low for the Legends, but rolling fenders could be the remedy. I know the design isn't too great, but maybe you could consider it.