I was going to comment that maybe you should back off on the IBUs, if you have never made an IPA before. Where I live now, if I go 0.90 BU:GU, it comes out pretty bitter. Whereas, the water at my previous address, I needed to go 1.2 or higher to get to too bitter. Unless you have brewed with your water and high IBUs before, I would stay under 1.00 BU:GU. But, with your changed hop schedule, you are now under 1.00. So, never mind LOL
I would add that you could probably get as much flavor with 1/3 of the dry hops you are planning to use and half the time. In fact, you might go from a hop flavor to a mown grass flavor with 2.5 oz for 14 days. I'd cut both in half at least, unless you like that vegetable flavor.