Marauder mace/shield knockout build

http://www.pathofexile.com/passive-skill-tree/AAAAAgEAxthYY1BQjM_2SF8_VEnnUu8Oud3yL0Tnajsc5yDwqBhqHtlhVw37qvMGoLQZLiftrKpyqXzZ9zKBK9-ylIdYPZ7FUea0L0E_0iGezacw974UIFBHGJHJmIOxpmQPzAHnNug7O3dTITRgxDpS379koxpVBjl5wO7ZYSGE714Tw4bnkayvdO1672BLBS1AoO9OMgkbyEMxtkFqk9XtwA_STb6ncD4wGeeu5FGbg1PfWNuE2Q5y3paJP76uWfPAGuSt3sEZ6WaeqZVwfU99gFZRYPjr_7AE5HXQkFXz3cT2d2I8Lcautz56uGz2guSKr5AR

This is my build. Plan is to use leap slam, heavy strike, maybe multistrike I don't know at this point really. I made it with well rounded PvP in mind and I don't think it has many serious weak points. Plan is to hit hard and fast with plenty of physical and magical resistance. Obviously physical defenses are the stronger point with plenty of armor, block chance, evasion and life. I took as many magic resist nodes as I could as well. The only real weak spot I see in it without gear is chaos damage. Otherwise it seems pretty solid.

What do you think? What would you change? What would you add? Am I on the right track here?

I plan to keep rapidly knocking opponents back so they don't really have much opportunity to move on their own. The +2 extra melee range is so when I knock back I have a slightly faster recovery time. I'll be stacking movement speed gear as well for the recovery and attack speed so that this all can happen really quickly, just a nonstop barrage of knockback. All the defense is for PvE and to keep me alive in case my opponent manages to get out of the knockback/stun chain. As far as I know knockback doesn't have diminishing returns so it might be a neat strategy but I'll incorporate stunning too, might as well since I have skill points improving it.