Change of brake pads and strut HKS (quick change) — Toyota Altezza, 2.0 liter, 1999

So, not so long ago I replaced the brake pads, since the old ones were already starting to whistle, when I saw that they were worn out almost to the metal, I put Japanese nisshinbo noticed that sometimes they whistle, changed so far only in front because they were still quite alive in the back ...
Now even in a traffic jam when you are not ashamed to slow down, otherwise it was so annoying to press the brake at low speed)))
I also bought HKS struts adjustable in stiffness and height, I plan to put it by the end of the week, I wonder how the control will change and how much harder the drain will be?