So I just drove my car four blocks to the gas station to fuel up for a drive to CHP to complete my registration process, scraped the front splitter leaving the station and now understand the wisdom of some type of air lift system. I see the postings on the Stance air cups and it looks like a good choice. My questions:

1. Are there other systems that are a better choice in terms of reliability, cost, etc?
2. I'm using the black Koni shocks. I assume it is necessary to invert them so the piston is on the top (?). Any problem in doing that with the black Koni? i recall that it was not recommended for the yellow model.
3. The Stance web site has different sizes of air cups. I assume the size is the shaft diameter and I measure mine at just under 16mm. Does that sound right?
4. Any reason to also add lifts to the rear? At this point my concern is speed bumps, driveways.

Thanks for any input!