My current rotation is (changes pretty often)
Raging > Straight Shot (you want this up before your first dots) > Blood for blood (Bloodletter) > Wind Bite (Internal (Hawkseye)) > Venom (Barrage) > Heavy (flaming arrow) > Heavy (Blunt Arrow) > IR should be at 5-4 seconds now so i Wind bite (repealing) > Venom > and SS should be on 1 second or literally just falling off so > Straight shot >

after all this generally speaking youll have 5 gcds till you need to reapply your dots, so thats 4 heavys and 1 straight inbetween (obviously this is subjective depending on procs)