If you really want an idea, for regular mobs you're just spamming forcequake & telekinetic wave (when procced), followed by any other ability to finish off stragglers. For boss fights, start with Mind Crush followed by Weaken Mind, Telekinetic Throw, a few Disturbances, Project, rinse and repeat if necessary. If you have to move around use instant abilities before channeled ones.
But really, at low levels it doesn't matter as much what order you use abilities in (just be careful with resource management), since you're still gaining new ones as you lvl.