I have not owned a kenyi so I cant speak for it, but my concern would be with the 2 auratus, when I had my tank they were always my trouble team, esp. with new additions. The others, in my experience from owning them were not as aggressive with new fish that I added, but everyone's tanks work different. It may balance out and it may not. I would for sure take the advice on re-arranging rock work if you go for it. You may also want to double check the species profiles and see the comparability for them as well for extra input to your decision.