New party composition

I'm thinking of doing a heavy RP run with a Thief/Mage dual (I've just always liked the class combo in theory) and I wanted to include an evil bard in my party composition, so I was thinking Eldoth (since I've never used him before) and Skie. I've never even gotten close to Skie, and my bad memory had me thinking she was a mage or something, but another thief? I also wanted Xzar and Monteron, since I've never finished the game with them.

So it is looking:

Thief/Mage DC Charname--(spellcaster/scout/backstab)
Xzar--------------------Mage (I am not dualing him because it doesn't fit his personality imo)
Monteron--------------- Frontliner (traps/locks)
Kagain------------------Tank
Eldoth------------------(spellcaster/wands/ranged)
Skie--------------------???

I guess, ideally, Skie could do traps and locks, and Monteron could do backstabs along with my charname (I really hate making Monteron do traps and locks, but for RP reasons, I'd like charname to have that role). What traps level do you need to get up to Baldur's Gate? Does anyone know what Skie's thieving stats are like at level 5 or 6?

Thinking about this yesterday sounded awesome. It looks like a train-wreck now.