Hmm...hand crossbow still seems like the best option. Those are some pretty steep penalties, and in any case, I don't want to leave the room where the key is...
Besides, if I'm going to attack with disadvantage anyway, might as well do it with the d6 weapon that might poison the drow instead of my d4 flint dagger. I assume Bertram will want the bow, so if I end up ahead of him in the turn order, I'll toss it to him or drop it (whatever's allowed) at the end of my turn.
You could either go to Erevan or Jimjar. Erevan can pick the lock with the picks he has, and Jimjar has the key.
[MENTION=36150]Herobizkit[/MENTION] - Sorry to lose you buddy! I totally understand the feeling though! I have to limit myself to only one online game at a time, and this is the one I choose! Best of luck, buddy!