I think I'd stay around the 220 mark, and 112-ish on the lobe separation. A truck used like a truck is easily over-cammed if you are not careful. As far as the power brakes go, you can operate brakes at 230 on a 390, as long as you keep the lobes spread to 112, but it will start to be sluggish off-idle and up to around 1500 if you go too far. I'd go .500 lift, 220 @ .050, and 112. If you go hydraulic roller, add about 4 degrees to it, since the quicker ramps will restore some of the off-idle response. Might want to think about a smaller manifold for a 390.........maybe even an iron CJ intake if in a truck, or a PI or Streetmaster. JMO.