Get the trinkets and weapons for your main. That way you will have always an up to date weapon.

Just make sure you don't get the gear that makes 10% extra XP or you will end with your main and your slaves severely missadjusted on levels when you reach lvl 60 or so.

Instead of collect quests just run some pvp while leveling. That will grant you a couple of pvp gear pieces for each toon of yuor team as soon as you ding lvl 60, 70 and 80.