I think you should get it, that's a very good deal already! If it wasn't the original price, it would only be $5K more. And through what I know, that's the highest floor the developer's been releasing so far.
I had this unit 3501 which was under 10 days recission period but it's gone now. It was being offered at a very good price of $289,900(base price) + $28,000(floor premimum) + $5,000(1st price increase) = $322,900
One of my co-worker has a similar model on a 13th floor (unit 1301) for $320,900. So you see the price of $322,900 was a great price. Since these I and VI are hot models, devloper is holding on to them so that they can sell it at a higher price at the public opening.