So far we only know we will have five, maybe six movies for sure. Three main line films and two or three anthology films, plus cartoons, which have been coming out for the last ten years of so. So seven years of Star Wars buildup for the most part with five for sure going to happen films to show for it, and then what? (Just how many Marvel films have been made under the Disney umbrella?)
More Anthology films? Probably, if Solo does as well or better than Rogue One. More main line films? Episode X seems a little soon if they are suppose to be generational. Unless they go the route of making some continuing adventures type films for Rey and company, like much of the old EU novels were Luke's group. Or do something radical and start making Old Republic era movies during the high point of the Sith Wars.
They can go anyplace really. Get all the possible use out of the new Disney theme part for Star Wars. Get back their investments and more over time. If Episodes VIII and IX give us a good trilogy story after TFA, than Disney and Lucasfilm will be set to do whatever for the next decade before they start to run out of steam.