I don't know of anyone in the UK running the same size all round or such wide tyres on the front. Also, as Rob says above, the offset is very aggressive and the wheels may come too far out of the arches. They will also rub if you lower it.
If this isn't the set up you want, walk away. Its a big investment to get it wrong aesthetically and balls up the handling.
If you do want to press on with it, do some research on my350z.com where some of our Yank cousins are running a four square set up.