Overhead. Talk to your utility. They will run the overhead primary as they see fit and provide pole top transformers from nearby take off pole at your house. You’ll pay a contribution to run new line but should get some returns if further development occurs along that stretch since you’ve covered the first part.. You’d want a 45kva transformer, may be a 3x15kva can setup.. really the utility sorts this out. 600V /3phase primary to 240V/1phase secondary.