I'm sure the lift didn't help - it increases frontal area. I know it's not apples to oranges, but driving around with the hatch wide open in my Insight causes my mileage to drop by
half at 50mph.
Seems to me that stock ride height is probably ideal in most cases. Going the other way presents its own challenges.
Been there with my last car. Scrape scrape scrape, and good luck taking a drink in the car without a lid.