2007 G35 Sedan wheel advice please.

[07G35Sedan]

Ok I just got a 2007 G35 Sedan Journey with the Navigation, sunroof setup. Its loaded but not a sport model so I have the 17 inchers with the goodyears.

I can get 2007 G35 Coupe 19 inch wheels and tires but wanted to know if anyone knows if this will fit?

Second question is what do you guys think about me putting on coupe wheels on the new body style sedan?

Reason why I ask is I can get the 19s with tires for $600 so a cheap upgrade. tires only have 7500 miles.

Please give me your opinion. Thanks.