Building off of what Skydragon is recommending, something like:
Dungeoncrashing Fighter 6 / Duskblade 9 / Juggernaut 5 / Warhulk 1
You'll have +18 BAB, plenty of HP, 3rd level spells in order to fuel Arcane Strike, and a few other goodies.
Alternatively, you can go something like:
Dungeoncrashing Fighter 6 / Duskblade 5 / Spellcarved Soldier 5 / Juggernaut 5
You end up with a few less spells from Duskblade, but Spellcarved is a nifty PrC, in my opinion. Not crazy powerful of course, but can fit your flavor pretty well. And then just start going War Hulk from there.
Is any Tome of Battle allowed? Because that would definitely affect things greatly, both feats and items (and base classes probably).
One great item I'd recommend is the Belt of the Behemoth from Secrets of Xen'drik. Is a Warforged only belt that increases you by 1 size category once a day. Only costs like 3,000 GP I recall. So see if your DM will let you pay for extra GP for a version that lets you enlarge like 4 or 5 times a day, or just buy a bunch of duplicates. (The Bracers you mentioned are awesome, but with their huge price tag, you won't be able to afford them for a looooong time.)