I had spare skill points pretty much my entire game. You don't really need another level for scorpions; they are already over powered. You can get two levels of Trader's Tongue, one by finding 3 books in the merchant's guild, and another by buying some junk from El'Gammon in the Blue Boar inn. There is so much surplus gold in Divinity, the amount you save with this skill isn't really significant later in the game, and NPCs you trade with a lot drop their prices some anyway, as their opinion of you improves.
