i have a few question about H&R

a guy over here is selling a cup-kit used for about 10 000km what do you think of that kit ???

and another question they sell wheel spacer what i was wondering is at what tickness you gotta start using longer wheel stud ? beacause i would like 5mm front and 10mm back i know they sell kit but i was wondering what kit comes with longer stud and what kit doesn't