Extra actions only matter if you have things to do with those actions. One strong spell is better than two weak ones and then nothing the next round.
Doomspeak is IC based, isn't it?
Edit: The Beguiler’s class skills (and the key ability for each skill) are Appraise, Balance, Bluff, Climb, Concentration, Decipher Script, Diplomacy, Disable Device, Disguise, Escape Artist, Forgery, Gather Information, Hide, Jump, Knowledge (arcana), Knowledge (local), Listen, Move Silently, Open Lock, Profession, Search, Sense Motive, Sleight of Hand, Speak Language, Spellcraft, Spot, Swim, Tumble, Use Magic Device.