Painting Orange. Tips and advice?

[Sonikgav]

Im just starting my Eldar Ghost Warrior army. Almost all Wraith constructs and im going for Orange armour with White sections (Head/Weapon Barrels etc)

As it stands theyre based White and then an undercoat of Wild Rider Red. I had washed it with Feugan Orange but it may not be a dark enough shade as it doesnt seem to add much. The GW guy also suggested I highlight with Fire Warrior Orange though that seems more a Peach colour.

The thing is its still very Dark. Its much more red than Orange and I want a deep, strong Orange. Not a pale red or a washy peach.

Take into account im semi limited to citadel as I dont visit many non GW hobby shops and I dont have an airbrush.

So any help??