I am in the same boat as well. Hoping to hear from some schools tomorrow. My professor from UNC , who is also the head of the grad school department told me to look into any graduate course you can take without actually being enrolled in the grad school. UNC has two classes that are grad classes you can take as an undergraduate. Other universities probably have some as well. She said this would help determine how you would stand with grad level of work. If you have an option to get and be an SLPA, that's another way to get experience.