Hey, quick question about warforged barbarian

[Respon1bity]

I plan to make one soon with veteran status and 32 point buy, I plan to be a warforged obviously and ill have arcane healing i beleive from an outside source (another player). I plan to be two handed fighting. What kind of feats should i be taking, the two handed fighting ones, probably improved critical on what i decide to use the most (greataxe probably so slashing) and toughness. Should I take adamantine body? I plan to stick with barbarian to level 20.

[Quikster]

thf, ithf, gthf, toughness/stunning blow, ic slash, power attack, cleave