must admit i have only ever had bad experiences with konis,and after reading a post on another forum "look at sig for clue" so have many other people,front leaking dampers all over the place ,I know the guarantee is good but how often do you want to change them!personally i think konis have a problem with the seal on the fronts,as for the first post the prices you have been given are very good what ever set up you go for.
you pay your money you take a chance.
my personal prefrance is bilsteins shocks.
springs depends what you want eibach,h&r, or one i have been using of late with no complaints are apex not to low but you still get a nice ride ,not harsh.
regards and best of luck with your choice
kevin