Okay guys, I need to know some quality builds for this wonderful little bastard here.

I mostly want to know what nature + ev spreads actually work well for him. Beyond that, it's fairly obvious to go for harvest, either sitrus+sub/protect or chesto+rest. But then that also raises questions, what HP ev investment, if any, allows him to make a sub and activate sitrus, or exactly how much should one invest in its spc def vs def for either build.