Blood in the Water is only good if you have a lot of attacks/high threat range. Unfortunately, Warforged Juggernaut doesn't lend itself well to either one. This doesn't mean that there aren't good manuvers for you from Tiger Claw (Pouncing Charge would be great). Have you considered Crusader instead of Warblade? There is a lot more synergy between the Juggernaut and Crusader, and Crusaders can heal themselves really, really well. Since these manuvers don't have any descriptors and are extraordinary, they heal a Warforged as well as a living character. Plus, Immortal Fortitude. Just keep making those Fort saves (you should be able to) and you won't have to fear dying from damage (just be sure to heal yourself with a manuver after you make a save). Make sure you take the Juggernaut levels early, though.
Aso, you can use Stone Power to get refreshing temporary hp (you will like this if you tank, regardless of if you go Warblade or Crusader) and it counts as Power Attack for fulfilling prerequisites. May want to pick up Power Attack later on, but you aren't required to. Note that Power Attack doesn't lend itself well to TWF, so Stone Power will probably be your better bet anyway.
If you're ever questioning what a good feat would be, Improved Damage Reduction is rarely a waste with Adamantine Body.
