Will this 20" staggered fitment work?

[DannyRay]

New to the site and in need of some answers. I recently just purchased my second G35 which is a 2007 coupe. I will post pictures of my 2006 G35 coupe below. I am looking into buying some new 20" staggered rims too. I had 20" staggered set up before but cant remember the size. I would like to know if the following tire / rim size will be an issue:

Front - 20 x 9 with 255-30-20 Offset of 20

Rear - 20 x 11 with 275-30-20 Offset of 25

I am assuming fenders will need to be rolled. I also intend on dropping it an inch. I tried the tire size calculator but I didn't understand.

Thanks
DR

[audtatious]

Tire size I would go with is a 255-35 in the front instead of a 30. Never messed with G35 sizing but based on our FAQ an aggressive configuration is "Front width: 9.5" +19mm offset Rear with: 10.5" +17mm offset"