I would have the springs re-arched by Eaton and use air shocks at a low pressure as back up for when you might hit a bad bump unexpectantly. I would never trust the springs when the tires are directly under the quarter panel..or stick out past the quarter.
You will have to use the Mr Gasket shock extensions again as what was on the car in the photo. They are still available from Mr Gasket in case you lost the originals.
http://www.ebay.com/itm/Mr-Gasket-Shock-...=item4cfd043465
Not sure what you mean by the little helper springs??