Wil this stocking work

[freeskier]

I wouldn't do the Braziliensis, They do get big but can be very aggressive especially when they spawn. I'd add a few more Jurupari (say 2-3) .

 

[Musha]

as long as your current inhabitants arent too small to be lunch for the oscars.

i dont see geo's and oscars mixed too often. i dont know how that would work. severums and oscars do fine together. but with your current stock.. you may want to rule out any large growing semi aggressive/aggressive cichlids.