The V1 is indeed the first Sergeant you'll find on the screen, the V2 is the one with the dirty pauldron and Davin's armour. Why don't you post a build thread for your trooper and post your research there?
I'd definitely build one yourself mate, look at Nick Black's build thread, it's in the Backpack section as well, he's using the same frame
as they used in the films
Could you make sure not to post writing in that colour? It's utterly impossible to read, it's sort of readable when you select it all. For a starter, create a thread for your build, show us what you got, and people will commence to help you