I've just got back from there today. We always do a similar route:
Nemesis, Air, then the Ripsaw: All at the far end of the park and all usually have the longest que's throughout the day so get to them first and you can have a ride or two before any que's grow.
Log Flume and Rapids: Que's are usually quick moving and it gets you wet early on so you have a few hours to dry.
Corkscrew & Rita: Again, quick moving que's.
Oblivion and the other rides around that section: Oblivion is ACE and should be ridden a good few times.
The Pinball rollercoaster: Excellent way to end the day and next to the exit/ entrance for a quick escape. Here's a tip though- DO NOT QUE IN THE NORMAL QUE. Go down the "single rider" que. You can ride it 6 or 7 times in about 30 minutes this way compared to a 30 - 60 minute que to ride it sat next to a friend.
With this route we've successfully managed to avoid long que times for the last couple of years.
Definately start with Nemesis and Air though as the que times can be an absolute killer if you leave it too late. That said, today was just awesome for ques: There were none (Thank God for school keeping the kids out
). We managed to get on every ride we wanted again and again and again and again.
Oh, and don't waste your time with the haunted house, hex or Charlie and the Chocolate Factory. They're utterly pants for anyone above the age of 8.
The monorail IS working during the week. Don't waste money on priority parking. Rita, the skyrail and the Mine train were the most notable attractions closed today. It is definately worth going during the week. It was so incredibly quiet and easy to get on every ride. The rest of the rides were open from opening to close so I'm not sure why others are stating strange ride operating times.