Toilet rough in questions

Hey all, fresh newb here in Savannah, GA.

Here is my plan to rough in my toilet:

Flange connected to:
14" long piece of 3" PVC to:
3" 90 long sweep elbow or closet flange to:
3" sanitary tee.

Lower part of San tee to:
5" long piece of 3" PVC to:
3" 45 elbow to:
3" wye on side, clean-out on one side to:
3"x4"x4" wye hooked up to the cast iron horizontal drain line

And just realized it'd be way better to draw it. I'll try and get that done. I am mainly concerned about the drop right under the toilet flange. I need it to connect the tub waste line above the toilet San tee just wanted to make sure it was kosher.

Here it is, kinda, lol.

And I have the shower vent and lav vent connect at the way top of this stack. so each fixture has its own vent.

That works with the 2" veritcal pipe on the vent.

Wow, from Terry himself! Thanks a bunch - I tried to get as much as I could out of the codes, but I just wanted to make sure.

Thanks again.