Early August might still have summer crowds (although who knows with this year!), and it will be really toasty, which could play into how much you're able to accomplish. I'm not sure if you like to meet characters or see shows, but those can eat up a lot of time, so I would prioritize across rides, shows, and characters (and maybe eating/snacking). Note RnRC does have a single rider line, but it can sometimes be as long a wait as the regular standby, and TOT will generally not call for single riders until just before boarding the elevator. If you're getting MB+, my preferred "stop and smell the roses" activity is bounty hunting on Batuu, and we would just waste time that way in between waiting for LL return times in GE and TSL. Personally, I always recommend use G+ in HS; it helps keep it a 1-day park. If there are two performances for Fantasmic!, I recommend sticking around for the later one because it will be way less crowded.