There are some upgrades that are specific to that brigade. However, building your kit to brigade spec from the beginning can complicate your initial app -- i.e. getting fix list items for optional items that are part of the brigade loadout, that would be better refined with advice from the brigades team.
What is typically recommended is that you build for basic approval first. At that point the Brigade sub forums will open up to you and you can get more direct feedback on your plan for your brigade upgrades.
Getting feedback on your base kit, and brigade items all at the same time can be pretty overwhelming.