Well let's see....You seem to be on your way with those first level spells, so let me just go from the second level spells. I suggest that you take Melf's Acid Arrow or Darkbolt for you offensive spells, as they pack a nice initial punch with a nasty aftertaste. Schorching ray is good for direct hits too. And for non-offensive spells, I suggest Rope Trick and Pyrotechnics (per Plane Sailing). Both will fluster opponents.
For the coveted third level, I suggest (of course) Fireball and Lightning Bolt for massive damage and reliability. Also, try Stony Grasp, as it can befuddle enemies to set them against a giant stone hand. Fly is another useful one in this level.
As for the fourth level, I highly recommend Greater Invisibility and Mordenkainen's Force Missiles. The missiles are as good or better than MM, and having a scapegoat like Greater Invisibility is a must. Also, your party members will make it worth spending all your 4th level slots to make the entire party into a killing whisper on the wind...
Any of these you can't find in your book or in the SRD can most easily be found in the d20 Spell Compendium (a must have for casters of all kinds).
Especially if you're a pirate. Which is wrong and I don't condone at all. Even if Limewire is easy to use to find high quality, over-priced items like the d20 Spell Compendium. Utterly and beautifully wrong....
Yeah....