Need new suspension
I'm gonna back up 'ol blu on this. Even with my limited knowledge and tinkering with KYB's and 1" bars, from where he has the tape, 1.5" will hit easily verified. 2" if your not careful. Less than that expect to be on the bump stops pretty much every time you leave the driveway. Maybe with stiff bars you can do 1.5 like he does. Obviously blunblu has put a bunch of R&D into getting the best out of his suspension. He seems fond of the topic. So I would use what he says as a solid baseline.
Also, it seems ride height and spring rates go hand in hand, I had mine set low and the damn front end was flipping around clattering like a fish, added another 1" to it. Way more firm and less wallow. Do what you want, but the lowest common denominator will determine ride height; fender clearance at full lock going up a curb, bump-stops and headers.