Now back to our normal diet of electrical talk.
Reno I am just curious (not critical) of a couple of your comments.
When you get to the building, come up on the outside; place your disconnect there. Then feed to an inside panel.
There would be no "main breaker" in the new panel.
Why would I want to come up outside to a disconnect only to pipe into a panel inside?
The disconnecting means shall be installed either inside or outside of the building....
Personally I would come up inside the building or up outside with conduit to an LB into the building.
In either case I would use a main breaker panel at the barn and save the cost and installation of the disconnect. Steve
I fully agree with the rest of Reno's comments, go deep, go big you will not be sorry in the future.
At 230' 2" PVC would be my choice, 1.5" PVC is the smallest I would consider for the power and while the trench was open I would be thinking about running a spare 1" - 1.25" for whatever. All this changes if your farm includes a backhoe, then I would not be as concerned about re-trenching.
I also agree that the 6 AWG neutral could be a problem.
Good luck and stay calm dude.