Proper fitting?

[AddisonAmg]

Hello everyone, wanting to make sure i get proper fittings for dropping into the main waste pipe in second floor bathroom, for draining sink, shower and tub, was going to use a 3inch 90 on the end and run perpendicular about 4 feet for the toilet. The bulk head is just big enough for the 3 inch pipe and only the top is exposed from the floor in new bathroom. Can I use a 3 inch wye with a 45? or maybe a 60. Thanks

 

[AddisonAmg]

top view of layout

 

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[AddisonAmg]

think tub and toilet venting are figured out. Tub line is 1 1/2. Line will tie in a bit down stream from toilet via a 3×3×2 wye with a reducer to accept the 1/1/2. For vent tee, can/should I make that tee accepts a 2 inch vent to go to roof instead of the 1 1/2? let me know everyone's thoughts and how this looks. Thanks