I have VS-1 Kit and Eibach Sportlines...And 15" stock rims (Weel radius about the same as 17" with low profile tires):D Yes it's low but looks good.
Distance between the front fender and the front weel 1.5 fingers
and rear 1 finger. (stock 4 f and 5r )
I do have an alighment kit on the front (Eibach $26) but i did not change my camber links at the rear.I went to alighment shop and they did the alighment for me...and it's not perfect but not far from it.So i do not think it's a big deal to have a rear camber links .(of cose it's better to have it)
So i can run over (But slow) every bump in the area w/o any problem.
And you have 18" rims so your car going to be even higer than my car. So... do not worry.