Hmm, I dunno about LA being the first. It's an interesting idea, but, it doesn't make sense unless you'd have to change the fact that it tells of Hyrule and Zelda, and stay with a wondering hero named Link. Oy! I just found out something:
What if LoZ was set *after* LA, witht he *same* Link?! I mean, if you studied the intro to LoZ, you will see that when Impa is attacked by Ganon's minions, a young heroic crusader named Link comes from a distant land and saves her.
Which could mean, that the LA Link could be the Oracle Link, because, wouldn't Link wanna return home after doing a quest, such as the Oracle ones? So, while returning home, he gets attacked and LA happens. It's sensible, and then he returns and Impa is rescued by him, and tells him of Zelda's state of condition.
How's that for a timeline theory?
-Tenial.