Hi everyone. I am converting my garage into a a master bedroom with a bathroom. I am looking for help on my venting setup. My town in Arizona uses the ipc code if that helps. So if you look at the picture I plan to run a 3 from the toilet to the main line and a 1 1/2 vent, the the tub will also get a 1 1/2 vent, the the dual vanity will also get a 1 1/2 vent. Will that be enough? Also does the stand up shower need a vent? Thank you. Im a diy and need some guidance.