There is a huge reason for proviron when using deca/NPP. To add DHT to the cycle to balance DHT/DHN.
Caber would be for prolactin. Personally i’ve used deca and tren at pretty high doses and prolactin never even got close to elevated. As I said above, we are all different and drugs will affect us differently. Better to have some caber on hand just in case but I would highly doubt you would need it.