I upvote your build because you've put a lot of time into it. However, the items aren't realy fit for orianna, and How do you escape a gank? I don't think her abilitys will be enough. Try to change that a bit.

Gratz, DaBo

You should realize that with Ionian Boots of Lucidity, you go well over 40 % CDR with both builds, and that is just a waste. Also I wonder where your Rabadon's Deathcap is :o

Interesting that you also go towards the support side of her, I don't think many Orianna players do that.

Perhaps you could take a look at the first link in my signature, it might help you with list, columns, indents etc.

Just so you know, the mana passive of archangel's and manamune do not stack.

I like the moonflair spellblade though, people tend to forget how useful that item is.