I’d do a lot more traveling. Like, spend a few centuries building and then using a Generation Ship, as we’ve discussed in other threads, but without the need for “generations”, which always seem to be where these things go wrong in sci-fi stories. Make it big enough and populous enough not to get bored while you’re en route, that would be the key. I figure most people spend about 90% of their time in the same one city anyways, so it can’t be that hard to make a city in space that would keep you occupied.