Colombian tetras would work well as a replacement for the silver dollars. And you could get a moonlight gourami instead of the silver shark.
Another fish that is blue is the electric blue german rams, which could replace the fighter.
So a possible stock list is:
Cochu Blue Tetra - 20+
Colombian tetras - 9
Moonlight Gourami - 4
Electric Blue Ram - 2/4
Bristlenose - 1 to keep the tank clean
The tank will have to be 3ft, preferably 4ft and have a canister filter.
You're unlikely to find any of these fish being bred, apart from maybe the rams, so either keep an eye on Trademe or buy them slowly from a fish shop