I’m sure if the space isn’t built yet you can figure out a way not to put your laundry into your bathroom.

The door to the hall should be 30” not 28”; washers are generally 27”ish, so once you get all of the trim on the door frame, it will be extremely tight moving a washer/dryer in.

For front loading machines, my personal preference is not to have a cabinet in between because it increases the distance when hanging laundry over.

Will multiple people be using this room at once? The separate ‘potty room’ is taking up space that could be used for storage or a larger vanity.

Is the second door in to the bedroom necessary?

Forget the potty room the cabinet between the W/D is not useful since it creates too much space for moving clothes from W to D. Where is the bedroom in relation to this space . IMO in a barndo there should be space for a separate laundry and try to do 30” doors everywhere .I would put the shower in the area where you have the toilet the toilet where you have the vanity and the vanity where you have the shower that would at least give some privacy if the door opens by accident and why 2 doors in this small space.

One would have to go through the laundry area to get to the bathroom in this layout, but at least the laundry is not in the bathroom. For the record, since this will eventually be a party space and guest quarters, the laundry in the bathroom doesn't really bother me.