Just spent the whole day up there yesterday & was able to do most of the big coasters. We probably could have done more but since we are fairly close & have APs we don't rush when we go anymore. We didn't walk in until around noon & left just after 10pm. We were able to do GateKeeper twice, Millennium Force, Maverick, Magnum XL-200, Gemini, Iron Dragon, Cedar Creek Mine Ride, WindSeeker, & the Big Wheel, as well as some smaller rides like The Scrambler, & Antique Cars.
Most of the lesser thrill coasters were walk-ons or 15 minute waits. My advice to anyone going this year though is this: Unless you are planning to be there right at opening & can assure a low wait for GateKeeper since it is the closest, newest coaster, it's not worth your time to wait over an hour. This is not a knock on the coaster because trust me, it's amazing. However, you can get a lot done while everyone else heads to GateKeeper early.
Your best bet would be to head towards the back of the park & get Maverick out of the way first. Maverick is consistently an hour & a half to 2 hour wait. Especially now with people paying absurd amounts of $ for Express Passes. After that hit, Magnum & Top Thrill Dragster (which went down on 3 separate occasions where we got in line for it so we skipped it for the day). We went back to GateKeeper around 3ish & only waited 45 minutes, then towards the end of the night we caught it before closing & only waited about 20 minutes.
You can take your own course obviously but just wanted to throw out some recommendations.
PS- If you have a fear of spiders, don't touch ANY railings as you're going up the ramp in line to Millennium Force!!! That queue is littered with huge spiders. I don't believe any of them are harmful but they are creeeeeeepy! I had to yank my girlfriend back as one lowered itself down from the lighting beam near the unload station while standing in line.
PSS- They're also having issues with midges EVERYWHERE. I believe it happens about every year. They are a fly/mosquito looking insect but they don't bite, they're just annoying.