I'm not a big fan of Chinook except for bittering ... and then only in moderation. As said before Chinook can be a bit harsh. I generally prefer Nugget, Magnum, Warrior or Horizon. My taste buds aren't the same as others so you'll get other opinions on this.
Your grain bill suggests a light colored beer. To me that implies a degree of lightness and crispness in the finish. To stay within BJCP standards for an American IPA you'll need to have 80% efficiency. Otherwise adjust your grain bill accordingly.
That said and depending on how bitter you like your beer, I'd suggest using the Chinook for initial bitterness then use a single hop of your choice for the rest of the additions. There are a number of really tasty varieties to choose from. Here is one possibility:
Chinook - 1 oz. @ 60 min.
Citra - 1/2 oz. @ 15 min.
Citra - 1 oz. @ 5 min.
Citra - 1 oz. @ 1 min.
Citra - 1 oz. @ flameout - whirlpool and rest 15 min then drain into fermenter
Citra - 2 oz. (whole leaf) - dry hop into secondary or keg at 7-14 days
Your IPA should fall within American IPA specs with ABV @ 5.7% and 53 IBU (assuming 80% efficiency).
You can follow a similar schedule with any number of other hop varieties you may want to feature. Just be sure to check the AA% and adjust additions so the IBU's stay within reason. Alternatively and as suggested above, you might also choose to sub some Galaxy for some of the Citra and get a very tasty IPA.
Just be sure to mash a little on the cool side and choose a yeast that will ferment a bit cool (Nottingham?) to preserve that crispness and avoid fruity and malty flavors (unless that's what you are looking for).
Cheers!