The kitchen sink needs it's cleanout, if you install a 3" there it would also handle the toilet. Somewhere you need a 3" near the end of the run.
Vent santees are upside down.[/QUOTE
this is looking down at the bathroom floor. Would this work this way? I’d like to run the 2” drains through the 2x8 joists to keep the plumbing inside the framing. The sinks would turn up vertical inside the wall and The vents would go to the attic and connect to the stack so I don’t have to drill so many holes in the framing. Any more recommendations? I’m hoping to start this weekend. Thanks for all the help thus far.