A guy wants to run a circuit to the rear of his property (700 feet)for lights on gate post. He also may build a garage back there at some point.
First question - just run the 120/240 circuit (or feeder) the 700 feet with cable sized based on the volatge drop (I can't offhand think of any thing else.
The other question is whether or not to run the feeder for the lights and future garage now. That is a question for the owner (whether he is sure he is going to build the garage at some point).