For those of you that are worry about the how high it goes... I would say you the highest would be around -15mm from standard.
The front suspension have "load" of room to play with, so that isn't the issue.
The rear lower bracket might come into play, but then you can also use the springs to raise there car so there are a few way to adjust the height on the rear if it comes down to it.
But I would say -15mm from standard would be achievable using the the Zeta-R coilovers.
However, what SR-25's concern are also correct as it mean the straight steering arm have drop the steering arm more than the lowered ride height amount.
With that said, I would say about -20-25mm you would be fine with the straight steering arm as chances are you will not be putting any more stress on the ball joint than the V-shape steering arm.
It will kind of be "in the middle" so to speak.
In this instance, the Straight steering arms will not create more stress; but it also will not offer noticeable advantage over the V-shape steering arms.
The overall "effective" range of height adjustments I will say around -20mm to around -50mm.