[PF1 Altered - Low Level Gestalt] Isekai Adventures

[AvatarVecna]

Then the full bab d12 hit dice with monk saves starts outpacing other melee types. A 6th level Drake has five hit dice, 12 str, and is small. A 12th level one has nine hit dice, sixteen strength, and is medium. An 18th level drake is Huge with 24 strength and 14 hit dice.

Sounds like double is about exactly where I was hoping then