Easy - Astarion Thief 4/Bard (College of Swords) 8
Covers all bases, lockpicking, dialogue, support and if you want multiple ranged attacks/round, especially deadly with duel hand crossbows
Still have an open party slot for Cleric, Paladin whatever.
You mentioned spore druid which is very fun to play - you could always wait to recruit Jaheira and respec as her spore druid.
