Account Suggestions

Okay, im up for anything, but I want this account to be specc'ed specially for pk'ing.
These are my current stats:

40 atk
34 strength
40 def
83 range
52 pray
71 mage
72 hp

What do you guys reccomend I do next?
I have 12m funds to use too.

I havent been on rs in years, so I dont even know what facility is used for pking.
Ive heard about this bounty hunter, is that it?