What is the "right" fitment

[jdsto]

Okay for starts let me say that its been since the early 90's since I have done any mods to a car and I am in the process of educating myself.

I just purchased a 2011 370z base model, (ie no sport package) in Monterey Blue or Prussian Blue for the Canadians.

Stock wheels as I understand it are
front 18x8j with 43mm offset
rear 18x9j with 15mm offset

For the time being the suspension will be left stock, the plan for the future is a KW variant 3. I will not be tracking the car but want to be able to lower the ride about 1inch and still have it comfortable for the street. When it is lowered I will add on adjustable camber as required, no short cutting that will lead to premature wear of expensive tires. The car will be my summer driver.

I am in love with the SSR GT V03 rims in flat black which will be awesome with the blue.

I was thinking for sizes
front 19x9.5j with 45offset
rear 19x10.5j with 25offset

is there any danger of rubbing now or future? When I said "right" in the subject line I mean a fitment that will not cause me any grief. If I need to stay narrower I will but I like the aggressive stance the wider tires will provide.

Thanks for any help.