You need to back it up 4* to put it where comp wants it.
FWIW, when these cam guys talk about 4* advance ground into the cam, all that means is instead of needing offset keys or bushings, when you install the cam "dot to dot" it SHOULD be 4* ahead of LSA. In reality, tolerance stack up usually means it won't come out correct. So "4* advance" ground into a cam is just not a performance thing. It just hopefully makes it somewhat easier to degree in.