Not sure about exact numbers for how high your DPS should be... But for my SCH rotation, I do:
Bio 2 > Miasma > Bio > Energy Drain > Aero > Energy Drain > Spam Broil > Refresh DoTs as needed. I usually always use Energy Drain after Bio/Aero to make up for the GCD downtime. Sometimes I'll toss a Miasma 2 in there, or may feel more comfortable saving my Aetherflows for healing in certain fights rather than using them on Energy Drains.

Also, if you have Selene summoned, keep Fey Wind on CD. ;P Higher attack speed = more DPS for you and your party.