When I went last in '07, it was Maverick, Millennium Force, and Raptor for early entry. I actually ended up of being able to get a nice front seat ride on Raptor (one train wait) before doing anything else.
On the other hand, since MF and Maverick are your goals, you would probably want to pick those two. I had time for two rides in my early entry, and I went with MF as my second ride, because Mavericks queue seemed close to full; MF's line was just out of the station. I'm not sure the waits for the two rides would be that unbalanced now, since Maverick isn't brand-spanking-new anymore. I'm not sure if they still do these three rides now either, maybe they switched it up.
When I don't have early entry (or after my early entry) I seem to start at Magnum and make a circle(ish) from there. Dragster's line seems to move quickly when i've been on it, unless there is a major break-down, which doesn't seem to happen nearly as often as it once did.
Have a good time!