Talent and gemming seems fine. Make sure you are using maul on every single autoattack. Macro it into a mangle, FF and lacerate if needed. And if you are spamming swipe make sure you dont cancel maul by mistake /cast !maul will help you with that iirc.
At the pull when the mob reached you and given you one blow you should pop berserk use manglefor the first 15 secs to get some good initial threat. And make sure berserk is on CD.
Instead of eating the feast you could try to eat hit food to reach hit cap. It is very easily farmed of the wolves in some of the Stormpeak caves. Other than that I cant see any problems with your gear/rotation assuming you actually keep mangle/FFF on cd.