I just did the maiden on a friend's 4-star 60, with .91FX. This plane has all the vertical you'd ever want with a 4-star.

The .91FX is a rocket with the recommended 13X9 or 13X8, and does not slow the plane much for landing (braking is what the 4-star needs.) A 15X6, on the other hand, provides good braking. I prefer a 14X6 APC (mind you, this is on my old Cermark 60 size Sukhoi), because it provides plenty of power and a bit of braking.

Opinions may differ. Good luck,
Dave Olson