Lowering when you have leafs

[Anthony Fremont]

My GMC naturally has leaf spring suspension and I'm not too keen on the prices/pain of converting it to coil. I thought about a flip-kit, and I might still do that, but I was wondering if this idea would work. I was thinking maybe these "helper" springs could be used:
http://www.suspensionconnection.com/...con/2071C.html
I was wondering if I took out a few (half?) of my leafs and added these if I could safely acheive adjustable suspension with leaf springs. Would that be too stressful on the remaining leafs? These bags seem like they are fully capable of holding the weight.