Since its in the guide, I will just quote it
And as far as needing to bother with gear; it depends on what you want to do. If you want to do some open world PvP, you will need the latest PvP gear. if not, well; you might look at how to min/max your gear but you probably won't worry about that unless you are going to be very competetive.
EDIT: Another note to add in even if redundant. NEVER augment any shells you will eventually trade if for future gear. This includes the current top PvP gear. Augment adaptive armor and then put your mods into it. Save yourself some coin later.
Well I'm trying to get good enough gear to do competitive ranked. So I guess I have to Augment each one of my pieces and then get the pve purples. Good lord min/maxing is expensive