I actually picked up a set from Catastrada for my R400 (09 Duratec) and didn't have any issues - sorry but I don't remember the offsets from the top of my head.
Just one thing though, when your tyre fitter balances the rear wheels, ensure they mount the weights towards the face of the wheel, I'd say at least 2.5 inches outboard from the inner edge or just as close to the back of the spokes as they can. If the weights are set too close too the inner edge the weights can foul against the de dion ears.
No issues with the front brakes no issues.
As far as tyres go I ran 175 fronts and 200 rears which had no problems with clearance against wing stays etc either.