I think eweryone need to follow their own path. I see nothing wrong with your setup but it would not be my choice, but who cares.
About the power, just make sure that the small 4 hp power supply modules have enough juice. Some modules take up more power and if there isnt enough you can end up frying them, i lost two modules that way. I don't like to give a lot of advice, but I would recomend that you look into using dedicated transformers.
I have been using those and they have worked really well, the guy is also very helpful. He also sells rails.
https://modularsynthlab.com/product/eurorack-power-kit-modular-synth-power-kit/