need advice on wet vent plumbing for changes to existing bathroom

[monte435]

I am expanding an existing bathroom. The current bathroom has a wet vent (2") with a single sink, a shower and a Toilet. The new layout will have dual sinks, tub, shower, and toilet. I am moving the toilet location. Single story house on concrete slab. Located in Florida IPC code. Main line is 3". Lines to shower and tub are 2". The location I am moving the toilet to happens to run almost directly over the main horizontal drain line. I am wondering if I can tie this in with a Wye and a 45 directly up to the toilet? is that to code? Will I have any issues with the toilet siphoning the tub or shower traps? Drawings attached

 

[monte435]

Also, since the WC is directly over the horizontal line, I also need to know if this orientation of the WYE+1/8 is ok or if it will cause clogging issues. I get conflicting info from different online sources.

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[monte435]

or do I need to use this type of orientation and move the toilet away from directly over top of the line