A 10/10 for crowd doesn't mean much in my opinion. Any time of the year, all of the "popular" attractions will have about an hour or more waits. I do my planning based on what dining I can get, and what shows I want to see. If you are wanting to hit the "big" rides during a busy time, be at the park about 30 minutes before rope drop. That can usually give you a less than an hour wait on most of the big rides, but it's also good to just get those out of the way. Then you can enjoy the rest of the park the rest of the day. I would make a list of what restaurants you want to eat at (if you are planning on doing table service), and where you want to be at night to see a certain show. Also, if you are staying at a resort hotel, take advantage of morning or evening Extra Magic Hours.