Layin rockers with a 69 longbed

[tdub19]

I just bought a 69 longbed that is going under the knife. I would like it to lay rockers. For the back i will be getting a 10in bride step notch with bride, a universal 4 link, and doesch shocks. I am still unsure about the front though. What combination should i use to get it as low as possible. I know i can get 3"drop spindles, but do i need different control arms? What is the easiest way to deal with the clearance problem for the crossmember. I could really use some advice to help me with my project. Any links or info would be greatly appreciated