Armatus won't work longterm with tats. The Tats little man syndrome will eventually shine through and when the Armatus is big enough it will end the little man syndrome for good.
IF yellow tail Cuda are anything like red tailed ones they are much to timid for an aggressive community. They grow slow and will eventually be snacked on by basically everything on that stock list.
Ditch the Armatus and change the Cuda to Odoe and I'd think it will work at least for a good while.......