Guess what your car would not be drivable with 17" with 1.8" drop if you get Blitz. Isaac has Blitz (stored in garage somewhere) he has 17" rims with no drop and he scrapes, thats the reason he took it off and put his other front bumpers on.
Eugi C did not believe me and baught same kit guess what the bumper dented his Fenders
becuase he hit a dip or something going 5m.p.h. What he is considering is getting a set of Fenders
to replace the dented ones, then put on another front bumper instead of the blitz.
What I would suggest you do is get 18" rims with 225/40/18 tires and change to stock springs. You still have to take driveways and dips at an angle, but you will be less likely to scrape. But I will still predict you will scrape either right when you drive out of the paintshop or within a week of installation.