Not bad... I personally wouldn't advise reforging and crit on your gear to Mastery, i read that at 85 a feral's crit chance is floating around the 30% mark where as on live at the minute the average is at or around 55-60% in raids. Savage defence relies on your crit chance to proc, reducing your crit is counter-productive. I do agree with you on the haste though, especially because you'll have an abundance of it now Arp has been converted.
I'd personally go with
This spec as the 'go to' spec for bears. I actually can't see any point in spending the points elsewhere... Everything in there is practically mandatory to tank successfully.