Help with Dry Hop Selection

My first brew is a DIPA kit, that has been happily fermenting for about 6 days.
Here's the ingredients and hop schedule:

6.6 lbs Light LME
3.0 lbs Golden DME
1.0 lbs Caramel 80L
0.5 lbs Victory
.25 lbs Carapils

2.0 oz Columbus (60 minutes)
1.0 oz Columbus (20 minutes)
1.0 oz Columbus (5 minutes)

On hand I currently have to use for dry hopping:

2.0 oz Galaxy
1.0 oz Columbus
1.0 oz Citra
1.0 oz Sorachi Ace

My though right now was 1.0 oz Columbus (to keep the theme going) and 1.5 oz of the Galaxy.

Any recommendations on what my go better with what I've got fermenting already?

Thanks

For a DIPA I would do at least 3 oz total. Toss in all of the Galaxy and Columbus.