I pm'd u the other day but we're pretty close with the same setup other than you're on Billy's and I'm on Radflo's. I'm currently sitting 1.5" preload with the Maxtrac 2.5" spacer. Originally had PRG's 1.5" spacer that Greg recommended for me and that put my truck leveled but with 2.5" preload. So I asked a few members my idea and they said it should work theoretically with the 2.5" spacer with less preload. I wanna say i got 4-5" lift with that setup as the truck sits 1" higher than when it was sitting level. I think if you're looking for more of a comfort ride I think with the Bilstein's you might not get that especially if you're planning on putting a bigger spacer. My truck rides like butter! I'm sure I can probably crank the Radflo's another 1" and still have a smooth ride. In the long run coilovers are going to be your best bet but hopefully someone with Bilstein's whose already done with the setup you're going for can chime in

