Point blank W/ Iron grip Marauder build . . . need some help

Sorry if this is already a answered post.

My current build is:

http://www.pathofexile.com/passive-skill-tree/AAAAAQEAzbEgVxapnzacg2LbRxIrdNntbQO3gOBpW6lBsciZvQLnCeoqg17vB4TXHBIK_CqvRqoNjrT2VeEEH3ke9AqYFJKyYraJaX6W_WgJbSPvSKyMnwtqgnnt7tjdRc3wrtWSlma1DeOGwCdz7xvc

I was wondering if with gear i should focus on armor or Evasion Rating?

Should i try for any ES?
And or what resists should i look for...

Thanks for any help given.