I got my alignment within FACTORY spec (probably not ideal) after sensor lowering to pretty much the max and still have a driveable car. the factory 26" O.D. tire sits into the wheel wells front and rear about 1/2". Pretty low for a drive height. (highway)
You can modify your eccentrics, if you have a shop and the right tools (grinder, welder, etc) to get them set to perfect spec. I'll be doing this during my front end rebuild.
After sensor lowering our cars it's not technically correct. The control arms aren't supposed to be elevated on an 'ideal' setup on any car. Mine are pitched pretty good! But it rides nice so I guess I don't care.
It is critical on these cars to get a new alignment job done after changing height at all, because the front tires don't only negatively camber, but they toe out a good amount also (front of tire in outward direction of where it should be) .... so your tires aren't only spinning, but also getting 'pushed' when driving down the road, and combined with the negative camber, will chew up a brand new set of tires down to the belts within 5k miles if you lowered the car excessively. I learned this on my '93, my first mark viii.