I have always been against blocks I have seen to many get knocked out for something stupid.. sounds dumb but I am just personally against them..
I am with you man seen too many wonky things happen with blocks.
So if going for a 4" lift. Someone said 3" tuff country springs a ez inch for the front. That's a good idea. Add that with aftermarket shackles and you end up slightly higher than 4".
In the rear I tend to like to lift about an inch higher than the front simply cause I load my rig down a lot. It also tows more than I would like it too. Also I like the way it looks more. I would also do a shackle flip in the rear.
Put good shocks on it and be prepared to check travel before you order shocks. You may need custom shock mounts



