Can someone answer this question,

I am on the ER in NYC, I sit at 68%. On the AE if I bid

DTW 777
DTW 330
NYC 7ER 70%
SEA 7ER 80%

Will it stop at NYC 7ER 70% if I can hold it?
If I can't hold a line in NYC then I would like to go to SEA 7ER. Since there is no AE for the ER in NYC, (but I am already there) will it honor my request to stay there at 70%.

Thanks for the help.