My car is lowered with KW Var3.
In the front I don't have any thread left, at the back I'm somewhat at the middle.
Setup is a tad stiffer than stock.
I think that the V1's going to be a little bit higher and the stiffness is going to be around the same as stock.
You could also lower with stock suspension.
I saw a topic here somewhere from some dude that used "lowering knuckles" (or something like that).