Need Suggestions for Height of Espo leaf springs with my QA1 set up for my 1964 valiant

Imo -Set the height for how and where you're going to drive the car. While low looks cool, many road conditions, curbs, driveways etc enjoy destroying the undercarriage.
In My case, it ain't for looks, and the outer edge of the rocker bottom is pretty much level with the axle center. That puts the pinch-weld ~11" off the ground w/ 24" dia. tires here, which is higher than all of My FWD Shelbys & cars with those components, don't have stuff hanging low mid-ship & it will be fine. Only a sharp transition to a steep grade poses a rear-end scrape danger, which can be found all over PA, so just say NO!!! LOL!