Not sure, but i do not think so. I hear that gobies, blennies, and damsels all get pretty aggressive when there are other tankmates in the tank that resemble the same shape or size. And im pretty sure gobies and blennies have been known to get angry at tankmates of similar shape and size.
With that being said, you *might* be able to get away with it since you have such a large tank. If they establish territory on seperate sides of the tank and don't impede on one another, i don't think you will see many problems. But just beware that like i said, those types of fish have been known to get aggressive when fish of the same size and shape are present in the same tank.