Until then, keep on working at your Hebrew, even if it's only 10 minutes a day. I wanted to study in Israel, and my parents forced me to attend university in the United States. Israeli universities tend to have a much more practical aspect to them, trying to help people get useful job skills. There is no such thing as a general liberal arts education in Israel. If you major in literature, you'll take lots of literature and little or no math, science, or physical education.
Engineers take very few humanities courses.
And so forth. So in general, I think that potential olim should attend American universities. Lots of first-year university students want to make aliyah. Many fewer graduating seniors actually do it. The cost of an American university education, and particularly a private university education, is astronomical in Israeli terms.