Whatever you choose - you realize you need to actually measure your p to v to be certain you're ok, right? No one can tell you for certain if a particular combo is gonna clear in your engine. They can tell you what happened in theirs, but that has no bearing on your clearances as each combo is unique when it comes to those kinds of dimensions.
You should be ok with a stage 1, but measure to be certain. I'd check out the boost/nitrous offerings from Comp Cams if you're gonna go off the shelf. If you really want to optimize, custom cam is the only way to go. Buddy Rawls did a great job on mine. Ed Curtis and Jay Allen are also respected on the sites.
