Wands of Acid Splash will solve that problem.
As for OP: Taking a level of SA-like class might not be necessary, depending on how your DM rules the following situation. You can take Hunter's Eye (ranger spell that grants SA) as your first Advanced Learning spell. This will give you SA for one round per casting in which case you will be able to apply US's SA bonus dice. Though you should first check with your DM if he/she will let you do this.