My best (according to my neighbors and brewing club) IPA was a little number I did with Centennial and Galaxy.
5 gallon batch
First Wort Hopped 30 IBU of Citra (90 minute boil) about .6ish oz
20 Minute Add: 26 IBU of Galaxy (@ 1 oz for a 5.5 gallon)
14 Minute Add: 17 IBU of Centennial (@ 1 oz)
Steeped 1 Oz of galaxy and 2 oz of Centennial for 30 minutes @180F
Dry Hopped with Centennial @ 2.5 OZ for 10 days.
2 Row (82%)
I think in your recipe, the Galaxy with the equal parts of Citra will add more complexity to flavor. Citra is IMHO pretty dominant. I would definitely take a taste of it.
I would however (again IMHO) to utilize two row versus the vienna/munich malt bill. Kind of unusual to have those 2 grains compromise such a large portion of the grist. I have tasted an all munich IPA and it was good, just different.