jogging strollers

My little guy is almost 4 months and I've been waiting to get a jogging stroller until he can actually use it.  I'm an avid runner and I can't wait to bring him along.  Plus, I'm tired of not being able to run when I'm alone with him.  I'm 5'2 and usually run on streets or sidewalks with the occasional semi paved trail.  We have a lot of hills where I live and the sidewalks can be pretty uneven.