If you are being allowed to use 3.5 content look into the Scout from Complete Adventurer. Increased movement by a bit, flawless and trackless step, Bonus damage for moving, Camoflauge in natural terrain, then Hide in plain sight later. Though they only get light armor as Phasics said mithral armor and an agile breasplate are a great combo. Take your two levels of rogue for the talent if you really want it.