Legendary for legendary

[Calyx]

OK.  There are a few legendaries i need that only appear in AS our i can't get in X due to reasons.  I need them to fill the dex so I'm willing to trade legendary Pokémon i own for them.  Here are the ones i need. 

Latias (pretty sure that's the red one)
Lugia
Dialga
Zekrom 
Moltres

I'm willing to return the others but I'm looking to trade Dialga for keeps. 

The Pokémon i have available for trade are
The Regi trio 
The pixie trio
The legendary dog trio
Ho-oh
Cobalion
Heatran
Landurus
Yvethal
Articuno
Virizion
Manapjy
Pichu (no clue why he's in my legendary box.  Lol!)
Let me know if anything catches your interest

[NorthernNova]

I can probably get Latias through the GTS. It takes time, though, besides that could I get the Landorus for it?

[Calyx]

Sure.  I'm fine with that.