Abombs + primo combination is fantastic. Although, abombs + any other AAS is fantastic, so I'm not sure if it's saying much.
The ultimate prep cycle, I think, is the one that you react the best to. I know, it's a disappointing answer... I could say to stick with the classic test/tren/mast combo, and it'd probably be at least close. But, tren can be a finicky bitch - not sure if it's really the ultimate if you're just trying to manage sides the whole time. In that case, primo might be an acceptable solution.
I will say, primo+abombs are reminiscent of tren to me... not the same but there is a similarity there.