IIRC, there was no 5th Ed elder codex. You'd have to use the 4th ed - that would mean no wraithknights, no spiritseer, no scatterlaser jetbikes, no wraithblades and all your aspect warriors would be terrible. No fliers either.
But the list you above is using the 7th ed codex anyway...
What armies are you likely to face?
The wraithhost in one of the older codexs has the wraithguard as a troop choice.
The teams i'm facing (Rough guess as I can't remember exactly what they have)
Dark Angels: Belial, bikes, termies, the flail guys, librarian and space marines
Grey Knights : 10 paladins, 5 terminators and Draigo
Chaos: Daemon prince, Hel brute, Rhino, 7 chosen, chaos lord, 20 cultists, and havoc squad
Tyranids: lots of hormagaunts
We are currently doing 1000pts going to 1250 by Christmas.
I had considered a grav tank army too
I have a decent understanding of the Eldar but am obviously very new as I don't own them, so feel free to talk like i'm a moron.