Fiery 2h Axe Tanky Marauder

Hi Guys, I really need opinions as I think I've finally settled on my build.
http://www.pathofexile.com/passive-skill-tree/AAAAAgEBAecCcQSzBS0S4RQgFE0ZLho4GtkhYCftKLUshS3SMgkyiTa6Nug6UjrYOuFAoETnTdhN41BHUFBUSVYEVw1X4lhjWK9Z81oaXQBfP2BLYIhhUmh0ah5qO2z2cql07XTxdud35XgNeu97jHzZguSGYIcpiPGKr4x2jM-QEZBVkc6UoJ65ns2fPqLqplenMKeEqBipaKlurFmsqq6TtfK53bvtwBrG2NBH0iHYTdlh2mLfv-dS7DjvDu9O8i_ynPZI977-jw==

Just as a heads up.
I've discovered that I do the most INSANE damage using infernal Blow with support: Added Fire, Elemental Damage, Added Melee Damage, Lifeleach, and Fast Attacks or Fire Penetration.
I basically oneshot everything while a majority of my passives are going to life. I seem to have real issues with mobs doing chaos damage at the moment.

Questions:
Should I go for Unwavering Stance/Iron Reflexes?
My next points should go to Increased life regen, Savant, Iron Grip, or Splitting Strikes?

Any other feedback?
Jay

This is my 2nd Option.
http://www.pathofexile.com/passive-skill-tree/AAAAAgEBAecCcQSzBS0OrRLhFCAUTRjbGS4aOCFgJ-0otSmlLIUt0jIJMok1hja6Nug6UjqzOthAoEOcROdKfU3YUEdQUFRJVgRXDVfiWGNZ81oaW69fP2BLYIhhUmegah5qO3KpdO108Xbnd-V673uMfNmGYId2jHaMz5BVkc6dqp65ns2fPp_LouqnMKeEqBipaKyquc253bvtwBrG2NIh2WHdDd-_51LsOO8O707yL_Kc9kj3vvzF
I just don't know if Iron reflexes is worth it or not really!

100 views come on give me a decent opinion whether positive or constructive!