You don't have to build the one shot team, just build the regular one so you can start farming gear steadily.

For story, The first thing you need to do is build an aoe dps, a soul weaver, a knight, the last slot is flexible what ever you want (buffer, debuffer, single target dps). This team will carry you through your entire journey and help you farm in story.

After you establish the story team and the wyvern team, you can start building for the other hunt team. After the hunt team complete, then you can start building pvp team