How much more beneficial is letro

[annjason31]

17 y/o 5'8 63kg, hand X-ray shows almost closed, but ortho said jaw still growing so if not some height I can use some facial gains

HGH: 15 IU

AI: I was thinking Arimidex .5 mg every other day but I was wondering how much more beneficial would letro be? i dont rlly want to have to take a naaa or something but