Good luck! Unfortunately, a lot of us have characters that are locked out of the Lagoon. I would join with my new character (up to L16 now), but I'm supposed to be hosting a real-world party at that time.
Note: the Lagoon is easy, but the Fogstone Mines have some of the hardest enemies so far, so not having a profession will make it tough. But we've done it with people below L20 before, so strategize your attacks and it should work (I recommend water rifles and tesla hammers, but sniper rifle is a solid option, too). Although having a full party of 3+ will be essential to beating at least one of the bosses to get the treasure at the bottom.