1st and 2nd Floors on same stack. Anything I should change about this plan?

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Detroit, MI
Hi all,
I am currently installing a 1st floor Bathroom. The plumbing for both floors is currently accessible so I would like to make sure this plan for drain and venting should work. The 2nd floor is a converted attic/living space so separate roof vents would prove difficult. I'm hoping to resolve this issue by using a Studor Mini Vent (24DFU on Branch, 160DFU on Stack) to vent 1F lav, wet vent 1F WC and 1F Shower. Anything I am missing in this design? Any feedback is greatly appreciated! Thanks
P.S. the 2F sink and 2F WC are not connected, just overlap in the drawing

Multi Floor Drain Vent.jpeg
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