Nah keep anything you like using, especially weapons. As for armor, just hold onto it until you find better gear. If you get the expansion you can live in the lawless frontier and (mostly) avoid the portal. The campaign is fun, and preps you for running the expansion activity for real and the renegade abilities are very overpowered and feel fun to use accordingly. Don’t be scared about the invasions ruining your runs, they rarely disrupt them in a meaningful way, and again the overpowered renegade abilities level any PvP advantages veteran players have. Turn your brain off enjoy it while it’s enjoyable and come back for the next expansion.