Re sks fenders, just be aware that you must trim the stays so that they fit perfectly into the attaching bits. These bits are enclosed, unlike other fender types where the stay protrudes through this mounting part.
Guess they do this for a cleaner look, but if you cut the stay too short, you can't make it longer again, if you put fatter tires on (not the case here I realize)
So I find putting my sks ones on more finicky, to not screw up basically