Wound up dropping to the next smaller front tire (225/50 vs 245/50) due to the tires catching the fender on large bumps and hard cornering. Car also has aftermarket front brakes that increase track width slightly, which contributed to the issue. Afterwards I was able to adjust the front end down another 1/2". No more rubbing 👍.
I still need to get my wagon aligned after installing the same Ridetech setup, but the 245/45/17’s clear nicely. I test fitted a 275/40/17 from my rear and it clears pretty well too with very rubbing on full lock turns. Once it’s aligned will re-assess and hope to go to that size.
For the top front spring perch I just hammered the tangs/tabs as needed to clear, no cutting.