1) Take Fracture off of your hotbar. Otherwise your opener is okay.
2) There is a myriad reasons to NOT use Fracture on DRG. It was bad at level 50 - it is terrible at level 60. Between those reasons is the massive TP cost and the fact DRG's rotation is tight as it is - tossing fracture inbetween WILL mess up your BOTD timing and general ogcd/cooldown management.
3) I generally AOE only if there's 4 mobs. 3 or less it's still a gain if you can spam Doom Spike, but I don't normally do it because that's when pulls are ending and it's good to save some TP. Rule of thumb: Never weave enough ogcds that it makes your GCD hang. For AOE, I do BL > H > IR+B4B > RoT > DfD > DS > Botd + PowerS > DS > Jump > DS > Geirs > DS till sub 500 TP while weaving the other ogcds, then more DS till sub 500 TP again.
Reason I do this is to take advantage of the botd to get a super buffed jump in the main mob I'm targetting - you're only going to get 1 GSK on that botd regardless, so it's not a loss unless mobs start dying before you use it, which usually doesn't happen. Don't spam RoT, it's terrible. It's a straight 60 potency loss per mob you'd hit with a Doom Spike. Line yourself up to the mob pack, aim at the farthest possible targest and go to town on Doom Spike.