Depends on wether or not the companions are nerfed by the tadpole. If they aren't, and they're only lvl 1 for gameplay's sake, i'd say it's well within the capability of the party to take the goblin camp. Hell, in such a scenario Gale could do it on his own.
They are weakened as part of the story. Gale pretty much tells you that he needs a powerful wizard when you meet him, and likely this is why he is interested in this Lorrokan from Baldur's Gate. If he still had all his magical prowess, he would not need one. There are also some comments from Wyll that he used to be more powerful than this, and a dialogue with Gale (though I don't recall the specifics).
Your character on the other hand starts out level one, no powerful background for you.
