It is a good plan, but my 7 and 10 year old daughters hand-picked the platies. They are part of the tank no matter what There is no getting rid of them. I don't want anything even MILDLY agressive (I do however completely love the butterflies. Have kept them in the past, but they are impossible to find here.)
I also already have half the tetras, and I don't care for rasboras.
okay, then here is what i would change for that which i think is okay as u said u r good with WCs and stock heavily
this may be like 150% to AA.
but oh well
4 java loaches
10 neon tetras
7 platys
1 african butterfly fish
4 corydoras OR 6 pygmy corys
and if ur daughters like bigger schools of fish or u do, then u can skip the butterfly fish, add 4 more neon tetras, and put in a betta