it really depends on if your going on a weekend or weekday, but heres the best way to get on those rides as quick as possible.
hit kingda ka first thing when the park opens, as long as it opens when the park does. then continue on to RT and Medusa (early in the morning you should walk onto both) GASM is almost always a walk on so you could pick that up next on your way to the other side of the park. then hopefully not wait too long for chiller, and end with a ride on nitro (the line usually moves rather quickly) of course this schedual is more for a half day at the park, as it seems that you don't plan on staying too long and covering all the coasters.
however, if you do stay until closing medusa, chiller, and RT usually have the shortest lines at night.