This route is consistant enough that there are plenty of cruxes to go around- the higher one is about the same as the one below the roof but I find it easier to protect so I'm more relaxed. But I'll definitely argue about the PG-13 thing. There's gear just about everywhere on this route if you're clever enough to find it and have the right stuff on your rack. Traprock is incredibly featured and with patience you can get decent gear in all sorts of unlikely places. But often this is an issue of having just the right RP or tiny cam.
This particular route has been the scene of many spectacular falls by climbers unfamiliar with traprock. Many years ago, a visiting "5.10 is just a warmup" climber proceeded to charge up this route to a point just below the roof placing only a single micro cam along the way - suddenly he was flying off and missed cratering by just a few feet. Fortunately that one tiny cam turned out to be OK. On his second effort, he managed to find a lot of gear he had overlooked on the first attempt and had something in about every 3 feet through the crux section.
The real problem is that it's so tiring to hang and place the gear that doing this route with a PG rating makes it a lot harder than at a PG-13 or R rating.
The crux on this one can be a little tricky, but it's mostly just a "getting over your nerves" move. It is just before the roof of Skull and bones, as I remember, the final move. The roof is a little high and you're on an undercling hold. Just trust the hold and power up to the roof - it's a solid hold up there. After the crux... enjoy the view on top of Skull and Bones - it's pretty much a staircase from there.