If you wish to cannon, which isn't a bad idea at all, you shouldn't be using void but high attack bonus. Good luck with training. :-)
Void/knives wouldn't be a bad idea though. Depends on your laziness. :-)
Hi Beyond,
The thing is, you have very "equal" levels, which is good for PvM'ing or doing slayer overall. If we're talking about PK'ing, you don't have good stats. Only if you'd challenge someone for a Hybrid fight (Range/Melee) you'd stand a good chance.
The guys who you fight in wilderness...