One thing to consider is weight, the extra cost to save a few lbs per corner is one of the cheapest all around performance mods you can make as it effects every single aspect, acceleration, braking, handling and things like ride, wear and tear on the suspension and chassis. Since next summer plan save a few more bucks, skip something with barely any real performance gain, get the best low weight well made wheels you can
They do look great though and are of decent quality so that is not an issue, just make sure not to heavy as most of theirs are so they are great low winter wheels.
Tirerack shows the 17x7" at 19.6 lbs which is a bit on the heavy side and the 16x6.5" at 16.6 lbs, nice weight savings but a bit narrow for our cars and the tires are far more limited in choices and many times the 16" tires will weight more than the 17's in a lower profile.
I think the OZ wheels are nice but overpriced and the better value is the TD wheels but I would ask for the exact weight for the offset you are looking into .