Well, I'll tell ya. I personally wouldn't crack that far into the motor unless I was putting something other than stock items into it. You are talking a lot of labor to get a cam in and out.
As much as I would love to change cams myself, I wouldn't dream of doing it until the heads were going to be changed also. As all the rockers are loose for a cam change, you have the intake off, all sensors and wiring layed aside. That is time to just unbolt the heads, replace, and go back with the better intake. There is just no since in doing all of this labor twice.
As I mentioned before, you can easily get to HO level with a rocker change. Raylar has the studs and 1.8 rockers that will fit under stock covers. Well, maybe not the conversion studs, since they use new heads, but you can get these anywhere. So, for around $400 including gaskets, you can get to the same point, if not better, since you are freeing up a lot of friction, too. Later you can use the same rockers with the Raylar kit.