Please move if necessary, I didn't know where to put this...

I am considering adding a blue lobster from one of my LFS, and was just looking for input from the "experts" I have a 36 gallon bow front with plenty of hiding spots and a medium gravel substrate. My only concern is that I have three cories. They keep together normally in a certain spot in my aquarium, and I think there is ample room on the bottom for this guy. I'm just exercising caution before or if I pull the trigger.

Thanks and I appreciate your feedback!