Need advice on basement bathroom layout.

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Hello everyone I have currently a toilet and sink drain roughed in my basement. I would like to add a shower and need advice on this. In the layout you will see where I would like the sink/vanity to be and the shower.
Few questions I have.
I would like to know if I could put the sink in the location marked in the diagram and run the 1 1/2 inch pvc along the walls to the drain/vent.

For the shower drain I would need to know what size pipe I will need and do I need a vent pipe for the shower or can it be wet vented like the toilet?

Also, since I have to open the floor I will move the vent /drain in the stud wall.

The blue lines show what I believe the pipe run is as the Main waste line is 13 feet away from toilet drain. Also there is no injector pit pipe is directly in the ground.
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Hey, wait a minute.

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