I'd say give the Plush chimera for getting Tansk to 80, the regular one for the first set of Tank mounts and an armored one to go with the Armored set.
Or wecan give the other jobs their moutns and do Chimera for PLD/DRG and 2 Jobs they want to theme after Rams and Dragons (the PVP gear gave DRG snakes and the Tank Mounts seem to match those)