Is a shackle flip safe to use with 8" lift?

[Destructo]

My friends think I need more lift on my truck, and I think their right. I want to make it into a pavement queen since I started with a nice Perfectly rust free body 85 truck I paid 2200 bucks for with a bad tranny. I have a 4" lift on it right now and could go with a ORD shackle flip in the rear to get the extra 4" and then i'd have to get 8" springs for the front. I think an ORD flip would be perfectly alright with up to an 8" lift, but just wanted to make sure. Its gonna be awhile before I would do this if it ever gets done. Right now I still want to use it for towing and hauling some stuff, but with an 8" lift it would totally be a toy.