Hi Ken, you want the +35 wheels. Due to the extra width of the 15 x 9 wheels the offset will change also.
You will not be dissapointed. I have not done any real data on camber change yet. But based on the wear of the current set of tires it looks like I can run a little less camber than my normal Spec set up of 3.5 front and 2.9 rear.
You will also notice the spring rate increase from the now stiffer sidewall. The car is better all the way around.
One downside is the tire wear looks to have increased with the increased speed through the corners.
Upside is less brake wear since you dont slow as much for the corner entry.