If you unlocked them, poke once and see what happens. If your squads can't get past the bosses, then you know you'll have to train your girls a bit more, so you won't have to try again, but at least know where you stand. And gladly, you can just leave the event maps and do manyu dailies or secret gardens during this event, while poking as many event raidbosses as possible.
Next event, you'll actually have to farm the event maps themselves again to get the collection item, so better level your girls as much as you can right now.