@locorabbit - take a look at it now, please.
One of the odd things about the Optimizer is that it doesn’t add an attraction automatically, if you say you have a Fastpass+ for it. We should probably fix that.
The first time I optimized the plan, it didn’t use the FP+ for Splash or Under the Sea. It had you visiting Under the Sea right after 7 Dwarfs, and the wait was like 5 minutes. But since you were back in Fantasyland early afternoon, I moved the step to then, so you could use the FP. (I think you’ll end up waiting about the same either way, so if you want to use that Fastpass+ for something else, go ahead.)
Also, I assume that you won’t want to ride Splash Mountain before 8 am, so I moved that step to later in the day.
The plan looks good, and you have lots of free time. Thanks for using the site, and let me know if there’s anything else we can help with.