I have brewed on again, off again for years, but now I have the bug. Brewing a double IPA this weekend and wanted to ask about my hops additions. I will be using 3 oz Magnum at 90, 2 oz Millennium at 30, 2 oz Columbus and 2oz Citra at the end of the boil, then dry hopping on 4 oz Mosaic. Is this to much? Or, am I in for a treat?