re the suspension travel.... if your total will be 4" you should have 'about' 2 1/2" compression and 1 1/2" extension. so at ride height the suspension should be compressed roughly 1/3. this is standard practice for suspension setup. you probably already knew but you mentioned 2" up and 2" down so.......
neil.
I'm waiting for new lower bumps to come in before I have a real measurement. I'll have them touch the LCA at 2", but I'm sure they will compress enough to get another 1/2" at the wheel.