Having another year to study will be good, Vicki. It will give you the time needed to plan for your trip and hopefully find a host family as lcp suggests -- lcp is one of our most knowledgeable members here on the Native American forum.
In 2008, I watched an episode of "30 Days", a reality show. In this episode, Morgan Spurlock (journalist and film producer) spent 30 days on a Navajo Reservation, living in a hogan. A hogan is the traditional Navajo home. The show is a fantastic way to learn about the Navajo peoples and their way of life. You can order the video from Amazon at this link:
Living on an Indian Rez It will really be worthwhile to watch the video. You might even be able to find out about a host family by contacting the "30 Days" producers.
Here is a link to an article that gives a little information on the film:
Morgan Spurlock - living in a hogan I believe that things happen for a reason and you having one more year to study and plan will probably be the best thing for you. Please keep in touch and let us know how things are going with you.