Shutting down wordpress, moving hugo over

I plan to (soon) close down the wordpress instance that lives at brimwats.com and replace it with the static brimwats.com/me hugo deployment. I know how to handle the hugo side of things (just update the base URL in config to brimwats.com, removing the /me/. But if I just hit ‘uninstall app’ on wordpress will it automatically delete everything and then we will be good to go? are there files I should clean out of file manager just to save space, etc?

Thank you!