I don't believe you should try PKing with dharoks with those stats... wouldn't make much money. Besides, you shouldn't really be PKing for money if you're not a pro.
OT: With DK's its all about knowing what your doing rather than stats, obviously stats will help you kill faster. But I suggest you look at a guide on Youtube. As for the rsgp/hr as the other guy said it is all luck. But I remember them being good money makers.
I don't believe you should try PKing with dharoks with those stats... wouldn't make much money. Besides, you shouldn't really be PKing for money if you're not a pro.