I think that would be fine. What I would possibly worry about is the SAE's. I always get it confused if they are the ones to get very aggressive with each other, or if it is CAE's
Chinese algae eaters become very agressive with eachother as they grow up. True SAE's will be fine. IMO, you could prbably have double the amount of otos, maybe 2 more loaches. They're pretty small and love company.