wet vent rough in

hello everyone.would this fly in so.cal?
sorry ,this is single story,one bathroom

You can wet vent a bathroom group.
Regardless of if the vent is wet or dry, every trap must be vented within the maximum allowed distance between the trap and the vent.

were the WC is. theres no room for vent in wall

You will have to route the line so you can get to a wall that you can vent through. The drain can run left or right and bend around to get back to the main. As long as you can maintain 2% grade.

The toilet must vented before the introduction of the laundry.
The laundry is causing venting problems there. It's all bets off for wet venting unless you can use the lav to wet vent the toilet. The laundry would need to be downstream of the bathroom, and the toilet.

The fix it to vent everything before it hits the main line. You want to fix this before you cover it. Once you are done, you will wish that a few more fittings were used.

The vent at the bottom on the right appears to have absolutely NO function. The laundry appears to have a "flat" vent. Unless the toilet is in the middle of a big room, there is ALWAYS a way to route the toilet drain so it is crosses under a wall.