Student Teaching

Although I am only at the beginning of an elementary ed. program I am
already thinking about student teaching.  My school offers the option
to student teach specifically in a kindergarten classroom or in the
other elementary grades.  I would love to teach kindergarten but I'm
worried that just focusing on that grade will hinder my job offers if
I apply to teach another grade.  Do you think that it would be best
for me to student teach in an elementary school?  Will it better my
chances of being hired in the future or does it not matter?  Please
let me know what you think.