If you can man, go for the savagery enchant. Other wise, go Mongoose. At 39 I am hoping you are fury because a twink arms at 39 has no mortal strike...
The heal from Crusader is nothing really. I would suggest designating a healer when you first start a bg. As a twink, healers want to heal you because they know you will do well. At 49 my warrior went 55-0 in wsg, all because of an undergeared 46 paladin whom I asked to heal me throughout the bg.
Also, always protect your healer :D