Basement Plumbing project

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I am adding a bathroom in a addition I built and there will be a kitchen above it. I just want to make sure I am doing everything correctly/best practice for this project. Any advice is appreciated. I have attached images of the project below.

Thanks

 

[Mr_David]

all depends on your local codes if you want to do it right.
here are some suggestions but those may need some tweeking.