The tanks look crazy and the fish are very high quality. For me personally though, if this was set up in my living room I think it would look better and more chilled with a bit more decor/scaping and a few less fish. For me the 2nd tank with just the gars and polys and maybe 1 dat with some more wood and rocks and a few plants would be amazingly cool. Personal taste obviously.
In my country I reckon the stock alone , even if you could source it would cost around $50000 so it's truly just a daydream for me.