Hi again. If you don't make PP an EMH priority, that makes things much easier. In this case, make Alice your first ride, followed by Toad, then even Snow and Pinnochio since unique dark rides are your priority. You'll probably get all these done in the hour, possibly even Matterhorn - depends what day you'll be there.
After Matterhorn though, I'd stay in the area since you want to do the Canal Boats. They're right there when you exit Matterhorn. This ride isn't open during EMH and also a slow loader. Same with Casey Jr. Short lines at these rides can be deceptive, especially Casey if they're only running one train. Then head over to Nemo. If you're doing Space (not unique but certainly worth a comparison ride since it has differences), get that FP first and then go ride Nemo as you wait out your return window.
Another thing to consider if you've only got 1 day at DL, head across the hub to Adventure/Frontier/NOS. Mornings are awesome on this side of the park and lines take longer to build. And just about everything is unique or so different you'll want to ride. Especially if you want to ride HM Holiday. I know you really want to do Nemo and any first time visitor should. But again, if your park visit is limited to one (??), you'll do a lot more bumping Nemo till the afternoon thereby getting in other unique/very different rides while those lines are still shorter.