I'm not sure what you're trying to do here. A SOA is a lot of work if done properly. It will net you somewhere between 4-1/2 and 6 inches of lift. The revolver shackles (which I don't coton to) will add another 1/2 to 1-1/2 inches of lift. So far, that's 5 to 7-1/2 inches of lift you'd have. Then you want to add 4" aftermarket springs to it? That would result in 9 to 11-1/2 inches of lift. For 35" tires -- which only need a total of about 6 inches of lift on a CJ.

The ride you're talking about sounds quite unstable to me -- even off-road.

BTW, YJ front springs are significantly WIDER than CJ front springs. So you would not only have to move your front spring perches and spring/shackle attachment brackets for the SOA, you'd have to replace them with wider ones.

It might help us if you could describe the type of off-road use you're planning.